{"id":63,"date":"2022-08-16T19:48:44","date_gmt":"2022-08-16T23:48:44","guid":{"rendered":"https:\/\/opentextbc.ca\/alfm2\/?post_type=chapter&#038;p=63"},"modified":"2025-02-26T12:30:19","modified_gmt":"2025-02-26T17:30:19","slug":"subtraction-of-larger-numbers","status":"publish","type":"chapter","link":"https:\/\/opentextbc.ca\/alfm2\/chapter\/subtraction-of-larger-numbers\/","title":{"raw":"Topic B: Subtraction of Larger Numbers","rendered":"Topic B: Subtraction of Larger Numbers"},"content":{"raw":"You can find the difference between two large numbers using the subtraction facts you have been practicing. Always take away or subtract the number after the minus sign.\r\n\r\nUse these steps to complete each subtraction question.\r\n<ul>\r\n \t<li>Step 1: Subtract the ones from the ones.<\/li>\r\n \t<li>Step 2: Subtract the tens from the tens.<\/li>\r\n \t<li>Step 3: Subtract the hundreds from the hundreds.<\/li>\r\n \t<li>Step 4: Subtract the thousands from the thousands.<\/li>\r\n \t<li>Step 5: Subtract the ten thousands from the ten thousands and so on.<\/li>\r\n<\/ul>\r\n<div class=\"textbox textbox--examples\"><header class=\"textbox__header\">\r\n<p class=\"textbox__title\">Example A: 57 \u2212 26<\/p>\r\n\r\n<\/header>\r\n<div class=\"textbox__content\">\r\n\r\n<strong>Step 1<\/strong>: Subtract the ones from the ones. 7 ones \u2212 6 ones = 1 one, write the answer in line with the ones in the question.\r\n\r\n[latex]\\begin{array}[t]{rr}&amp;57\\\\-&amp;26\\\\ \\hline &amp;1\\end{array}[\/latex]\r\n\r\n<strong>Step 2<\/strong>: Subtract the tens from the tens. 5 tens \u2212 2 tens = 3 tens\r\n\r\nThe difference between 57 and 26 is 31.\r\n\r\n[latex]\\begin{array}[t]{rr}&amp;57\\\\-&amp;26\\\\ \\hline &amp;31\\end{array}[\/latex]\r\n\r\n<\/div>\r\n<\/div>\r\n<div class=\"textbox textbox--exercises\"><header class=\"textbox__header\">\r\n<p class=\"textbox__title\">Exercise One<\/p>\r\n\r\n<\/header>\r\n<div class=\"textbox__content\">\r\n\r\nFind the differences. Check your work using the answer key at the end of the exercise.\r\n<ol class=\"threecolumn\" type=\"a\">\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;36\\\\-&amp;13\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;72\\\\-&amp;42\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;48\\\\-&amp;22\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;55\\\\-&amp;31\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;93\\\\-&amp;40\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;76\\\\-&amp;71\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;95\\\\-&amp;62\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;39\\\\-&amp;26\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;64\\\\-&amp;21\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;85\\\\-&amp;64\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;98\\\\-&amp;73\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;76\\\\-&amp;64\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;86\\\\-&amp;50\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;95\\\\-&amp;35\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;28\\\\-&amp;17\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;69\\\\-&amp;52\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;84\\\\-&amp;40\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;74\\\\-&amp;53\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;97\\\\-&amp;83\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;89\\\\-&amp;80\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;79\\\\-&amp;29\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;89\\\\-&amp;80\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;67\\\\-&amp;61\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;48\\\\-&amp;40\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n<\/ol>\r\n<strong>Answers Exercise One<\/strong>\r\n<ol class=\"threecolumn\" type=\"a\">\r\n \t<li>23<\/li>\r\n \t<li>30<\/li>\r\n \t<li>26<\/li>\r\n \t<li>24<\/li>\r\n \t<li>53<\/li>\r\n \t<li>5<\/li>\r\n \t<li>33<\/li>\r\n \t<li>13<\/li>\r\n \t<li>43<\/li>\r\n \t<li>21<\/li>\r\n \t<li>25<\/li>\r\n \t<li>12<\/li>\r\n \t<li>36<\/li>\r\n \t<li>60<\/li>\r\n \t<li>11<\/li>\r\n \t<li>17<\/li>\r\n \t<li>44<\/li>\r\n \t<li>21<\/li>\r\n \t<li>14<\/li>\r\n \t<li>9<\/li>\r\n \t<li>50<\/li>\r\n \t<li>9<\/li>\r\n \t<li>6<\/li>\r\n \t<li>8<\/li>\r\n<\/ol>\r\n<\/div>\r\n<\/div>\r\n<h1>Checking Subtraction<\/h1>\r\nYou can check your subtraction. Add the answer (the difference) to the number you took away (the second number). If your subtracting was correct, the result of the adding will be the number you started with (the top number) in the subtraction question.\r\n<div class=\"textbox textbox--examples\"><header class=\"textbox__header\">\r\n<p class=\"textbox__title\">Example B<\/p>\r\n\r\n<\/header>\r\n<div class=\"textbox__content\">\r\n\r\nThe difference is [latex]\\begin{array}[t]{rr}&amp;928\\\\-&amp;416\\\\ \\hline&amp;512\\end{array}[\/latex]\r\n\r\nTo check, add 512 to 416.\r\n\r\n[latex]\\begin{array}[t]{rr}&amp;512\\\\+&amp;416\\\\ \\hline&amp;928\\end{array}[\/latex]\r\n\r\n<\/div>\r\n<\/div>\r\n<div class=\"textbox textbox--exercises\"><header class=\"textbox__header\">\r\n<p class=\"textbox__title\">Exercise Two<\/p>\r\n\r\n<\/header>\r\n<div class=\"textbox__content\">\r\n\r\nFind the differences. Check your work by adding and then by using the answer key at the end of the exercise.\r\n<ol class=\"threecolumn\" type=\"a\">\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;87\\\\-&amp;36\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;29\\\\-&amp;21\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;48\\\\-&amp;40\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;99\\\\-&amp;63\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;75\\\\-&amp;45\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;73\\\\-&amp;20\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;92\\\\-&amp;21\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;58\\\\-&amp;27\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;84\\\\-&amp;23\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;69\\\\-&amp;38\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;45\\\\-&amp;23\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;49\\\\-&amp;19\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;59\\\\-&amp;14\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;89\\\\-&amp;63\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;88\\\\-&amp;15\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;56\\\\-&amp;44\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;96\\\\-&amp;75\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;37\\\\-&amp;17\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;70\\\\-&amp;50\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;38\\\\-&amp;24\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;31\\\\-&amp;10\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;27\\\\-&amp;12\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;74\\\\-&amp;53\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;45\\\\-&amp;20\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n<\/ol>\r\n<strong>Answers to Exercise Two<\/strong>\r\n<ol class=\"threecolumn\" type=\"a\">\r\n \t<li>51<\/li>\r\n \t<li>8<\/li>\r\n \t<li>8<\/li>\r\n \t<li>36<\/li>\r\n \t<li>30<\/li>\r\n \t<li>53<\/li>\r\n \t<li>71<\/li>\r\n \t<li>31<\/li>\r\n \t<li>61<\/li>\r\n \t<li>31<\/li>\r\n \t<li>22<\/li>\r\n \t<li>30<\/li>\r\n \t<li>45<\/li>\r\n \t<li>26<\/li>\r\n \t<li>73<\/li>\r\n \t<li>12<\/li>\r\n \t<li>21<\/li>\r\n \t<li>20<\/li>\r\n \t<li>20<\/li>\r\n \t<li>14<\/li>\r\n \t<li>21<\/li>\r\n \t<li>15<\/li>\r\n \t<li>21<\/li>\r\n \t<li>25<\/li>\r\n<\/ol>\r\n<\/div>\r\n<\/div>\r\n<div class=\"textbox textbox--examples\"><header class=\"textbox__header\">\r\n<p class=\"textbox__title\">Example C: 696 \u2212 251 =<\/p>\r\n\r\n<\/header>\r\n<div class=\"textbox__content\">\r\n\r\nUse these steps to complete each subtraction question.\r\n\r\n<strong>Step 1<\/strong>: Subtract the ones from the ones. 6 ones \u2212 1 one = 5 ones\r\n\r\n[latex]\\begin{array}[t]{rr}&amp;696\\\\-&amp;251\\\\ \\hline &amp;5 \\end{array}[\/latex]\r\n\r\n<strong>Step 2<\/strong>: Subtract the tens from the tens. 9 tens \u2212 5 tens = 4 tens\r\n\r\n[latex]\\begin{array}[t]{rr}&amp; 696\\\\-&amp;251\\\\ \\hline &amp;45 \\end{array}[\/latex]\r\n\r\n<strong>Step 3:<\/strong> Subtract the hundreds from the hundreds.\r\n\r\n6 hundreds \u2212 2 hundreds = 4 hundreds\r\n\r\n[latex]\\begin{array}[t]{rr}&amp; 696\\\\-&amp;251\\\\ \\hline &amp;445 \\end{array}[\/latex]\r\n\r\nThe difference between 696 and 251 is 445.\r\n\r\n<\/div>\r\n<\/div>\r\n<div class=\"textbox textbox--exercises\"><header class=\"textbox__header\">\r\n<p class=\"textbox__title\">Exercise Three<\/p>\r\n\r\n<\/header>\r\n<div class=\"textbox__content\">\r\n\r\nFind the differences. Check your work using the answer key at the end of the exercise.\r\n<ol class=\"threecolumn\" type=\"a\">\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;995\\\\-&amp;452\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;877\\\\-&amp;342\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;788\\\\-&amp;615\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;987\\\\-&amp;243\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;549\\\\-&amp;131\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;806\\\\-&amp;204\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;953\\\\-&amp;603\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;569\\\\-&amp;403\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;874\\\\-&amp;650\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;269\\\\-&amp;159\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;485\\\\-&amp;203\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;381\\\\-&amp;270\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;796\\\\-&amp;172\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;864\\\\-&amp;531\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;963\\\\-&amp;810\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;957\\\\-&amp;342\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;837\\\\-&amp;410\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;528\\\\-&amp;208\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;549\\\\-&amp;120\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;627\\\\-&amp;523\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;849\\\\-&amp;246\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;175\\\\-&amp;163\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;937\\\\-&amp;224\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;875\\\\-&amp;252\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n<\/ol>\r\n<strong>Answers to Exercise Three<\/strong>\r\n<ol class=\"threecolumn\" type=\"a\">\r\n \t<li>543<\/li>\r\n \t<li>535<\/li>\r\n \t<li>173<\/li>\r\n \t<li>744<\/li>\r\n \t<li>418<\/li>\r\n \t<li>602<\/li>\r\n \t<li>350<\/li>\r\n \t<li>166<\/li>\r\n \t<li>224<\/li>\r\n \t<li>110<\/li>\r\n \t<li>282<\/li>\r\n \t<li>111<\/li>\r\n \t<li>624<\/li>\r\n \t<li>333<\/li>\r\n \t<li>153<\/li>\r\n \t<li>615<\/li>\r\n \t<li>427<\/li>\r\n \t<li>320<\/li>\r\n \t<li>429<\/li>\r\n \t<li>104<\/li>\r\n \t<li>603<\/li>\r\n \t<li>12<\/li>\r\n \t<li>713<\/li>\r\n \t<li>623<\/li>\r\n<\/ol>\r\n<\/div>\r\n<\/div>\r\n<div class=\"textbox textbox--exercises\"><header class=\"textbox__header\">\r\n<p class=\"textbox__title\">Exercise Four<\/p>\r\n\r\n<\/header>\r\n<div class=\"textbox__content\">\r\n\r\nFind the differences. Check your work using the answer key at the end of the exercise.\r\n<ol class=\"threecolumn\" type=\"a\">\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;543\\\\-&amp;132\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;752\\\\-&amp;150\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp; 328\\\\-&amp;115\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp; 758\\\\-&amp;341\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;587\\\\-&amp;425\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;857\\\\-&amp;143\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;545\\\\-&amp;302\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;466\\\\-&amp;115\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;964\\\\-&amp;231\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;679\\\\-&amp;424\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;757\\\\-&amp;136\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;467\\\\-&amp;132\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n<\/ol>\r\n<strong>Answers to Exercise Four<\/strong>\r\n<ol class=\"threecolumn\" type=\"a\">\r\n \t<li>411<\/li>\r\n \t<li>602<\/li>\r\n \t<li>213<\/li>\r\n \t<li>417<\/li>\r\n \t<li>162<\/li>\r\n \t<li>714<\/li>\r\n \t<li>243<\/li>\r\n \t<li>351<\/li>\r\n \t<li>733<\/li>\r\n \t<li>255<\/li>\r\n \t<li>621<\/li>\r\n \t<li>335<\/li>\r\n<\/ol>\r\n<\/div>\r\n<\/div>\r\nUse these steps to complete each subtraction question:\r\n<div class=\"textbox textbox--examples\"><header class=\"textbox__header\">\r\n<p class=\"textbox__title\">Example D: 4<span style=\"margin-left: 0.25em;\">628<\/span> \u2212 2<span style=\"margin-left: 0.25em;\">604<\/span> =<\/p>\r\n\r\n<\/header>\r\n<div class=\"textbox__content\">\r\n\r\n<strong>Step 1:<\/strong> Subtract the ones from the ones. 8 ones \u2212 4 ones = 4 ones\r\n\r\n[latex]\\begin{array}[t]{rr}&amp;4\\, 628 \\\\\u2212 &amp;2\\, 604\\\\ \\hline&amp; 4 \\end{array}[\/latex]\r\n\r\n<strong>Step 2<\/strong>: Subtract the tens from the tens. 2 tens \u2212 0 tens = 2 tens\r\n\r\n[latex]\\begin{array}[t]{rr}&amp;4\\, 628 \\\\\u2212&amp; 2\\, 604\\\\ \\hline &amp;24 \\end{array}[\/latex]\r\n\r\n<strong>Step 3<\/strong>: Subtract the hundreds from the hundreds.\r\n\r\n6 hundreds \u2212 6 hundreds = 0 hundreds\r\n\r\n[latex]\\begin{array}[t]{rr}&amp;4\\, 628 \\\\\u2212&amp; 2\\, 604\\\\ \\hline &amp;024 \\end{array}[\/latex]\r\n\r\nThe 0 must be placed in the answer to hold the hundreds place.\r\n\r\n<strong>Step 4<\/strong>: Subtract the thousands from the thousands.\r\n\r\n4 thousands \u2212 2 thousands = 2 thousands\r\n\r\n[latex]\\begin{array}[t]{rr}&amp;4\\, 628 \\\\\u2212&amp; 2\\, 604\\\\ \\hline &amp;2\\,024 \\end{array}[\/latex]\r\n\r\nThe difference between 4<span style=\"margin-left: 0.25em;\">628<\/span> and 2<span style=\"margin-left: 0.25em;\">604<\/span> is 2<span style=\"margin-left: 0.25em;\">024<\/span>.\r\n\r\n<\/div>\r\n<\/div>\r\n<div class=\"textbox textbox--examples\"><header class=\"textbox__header\">\r\n<p class=\"textbox__title\">Example E: 79<span style=\"margin-left: 0.25em;\">486<\/span> \u2212 42<span style=\"margin-left: 0.25em;\">104<\/span> =<\/p>\r\n\r\n<\/header>\r\n<div class=\"textbox__content\">\r\n\r\n<strong>Step 1<\/strong>: Subtract the ones from the ones. 6 ones \u2212 4 ones = 2 ones\r\n\r\n[latex]\\begin{array}[t]{rr}&amp;79\\, 486 \\\\\u2212&amp; 42\\, 104\\\\ \\hline&amp; 2 \\end{array}[\/latex]\r\n\r\n<strong>Step 2<\/strong>: Subtract the tens from the tens. 8 tens \u2212 0 tens = 8 tens\r\n\r\n[latex]\\begin{array}[t]{rr}&amp;79\\, 486 \\\\\u2212 &amp;42\\, 104\\\\ \\hline &amp;82 \\end{array}[\/latex]\r\n\r\n<strong>Step 3<\/strong>: Subtract the hundreds from the hundreds.\r\n\r\n4 hundreds \u2212 1 hundreds = 3 hundreds\r\n\r\n[latex]\\begin{array}[t]{rr}&amp;79\\, 486 \\\\\u2212 &amp;42\\, 104\\\\ \\hline &amp;382 \\end{array}[\/latex]\r\n\r\n<strong>Step 4<\/strong>: Subtract the thousands from the thousands.\r\n\r\n9 thousands \u2212 2 thousands = 7 thousands\r\n\r\n[latex]\\begin{array}[t]{rr}&amp;79\\, 486 \\\\\u2212 &amp;42\\, 104\\\\ \\hline&amp; 7\\,382 \\end{array}[\/latex]\r\n\r\nStep 5: Subtract the ten thousands from the ten thousands.\r\n\r\n7 ten thousands \u2212 4 ten thousands = 3 ten thousands\r\n\r\n[latex]\\begin{array}[t]{rr}&amp;79\\, 486 \\\\\u2212 &amp;42\\, 104\\\\ \\hline &amp;37\\,382 \\end{array}[\/latex]\r\n\r\nThe difference between 79<span style=\"margin-left: 0.25em;\">486<\/span> and 42<span style=\"margin-left: 0.25em;\">104<\/span> is 37<span style=\"margin-left: 0.25em;\">382<\/span>.\r\n\r\n<\/div>\r\n<\/div>\r\n<div class=\"textbox textbox--exercises\"><header class=\"textbox__header\">\r\n<p class=\"textbox__title\">Exercise Five<\/p>\r\n\r\n<\/header>\r\n<div class=\"textbox__content\">\r\n<ol class=\"threecolumn\" type=\"a\">\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;8\\, 646 \\\\-&amp; 542\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;7\\, 295 \\\\-&amp; 231\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;9\\, 738 \\\\-&amp; 215\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;6\\, 498 \\\\-&amp; 253\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;3\\, 674 \\\\-&amp; 2\\, 503\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;3 \\,219 \\\\-&amp; 2\\, 116\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;6\\, 456 \\\\-&amp; 5\\,\\ 234\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;1\\, 758 \\\\-&amp; 1\\, 431\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;8\\, 954 \\\\-&amp; 2\\, 151\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;8\\, 975 \\\\-&amp; 4\\, 732\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;7\\, 296 \\\\-&amp; 5\\, 081\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;9\\, 678 \\\\-&amp; 4\\, 316\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;9\\, 489 \\\\-&amp; 2\\, 079\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;7\\, 638 \\\\-&amp; 6\\, 218\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;4\\, 759 \\\\-&amp; 1\\, 136\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;8\\, 275 \\\\-&amp; 4\\, 073\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n<\/ol>\r\n<strong>Answers to Exercise Five<\/strong>\r\n<ol class=\"threecolumn\" type=\"a\">\r\n \t<li>8<span style=\"margin-left: 0.25em;\">104<\/span><\/li>\r\n \t<li>7<span style=\"margin-left: 0.25em;\">064<\/span><\/li>\r\n \t<li>9<span style=\"margin-left: 0.25em;\">523<\/span><\/li>\r\n \t<li>6<span style=\"margin-left: 0.25em;\">245<\/span><\/li>\r\n \t<li>1<span style=\"margin-left: 0.25em;\">171<\/span><\/li>\r\n \t<li>1<span style=\"margin-left: 0.25em;\">103<\/span><\/li>\r\n \t<li>1<span style=\"margin-left: 0.25em;\">222<\/span><\/li>\r\n \t<li>327<\/li>\r\n \t<li>6<span style=\"margin-left: 0.25em;\">803<\/span><\/li>\r\n \t<li>4<span style=\"margin-left: 0.25em;\">243<\/span><\/li>\r\n \t<li>2<span style=\"margin-left: 0.25em;\">215<\/span><\/li>\r\n \t<li>5<span style=\"margin-left: 0.25em;\">362<\/span><\/li>\r\n \t<li>7<span style=\"margin-left: 0.25em;\">410<\/span><\/li>\r\n \t<li>1<span style=\"margin-left: 0.25em;\">420<\/span><\/li>\r\n \t<li>3<span style=\"margin-left: 0.25em;\">623<\/span><\/li>\r\n \t<li>4<span style=\"margin-left: 0.25em;\">202<\/span><\/li>\r\n<\/ol>\r\n<\/div>\r\n<\/div>\r\nIf a subtraction question is written with the numbers side by side, rewrite the question in columns. Put the ones under the ones, the tens under the tens, the hundreds under the hundreds, and so on. The first number is always the top number and the second number is always written below the first number.\r\n<div class=\"textbox textbox--examples\"><header class=\"textbox__header\">\r\n<p class=\"textbox__title\">Example F: 687 \u2212 52 =<\/p>\r\n\r\n<\/header>\r\n<div class=\"textbox__content\">\r\n\r\n[latex]\\begin{array}[t]{rr} &amp;687\\\\-&amp;52\\\\ \\hline &amp;635\\end{array}[\/latex]\r\n\r\n<\/div>\r\n<\/div>\r\n<div class=\"textbox textbox--examples\"><header class=\"textbox__header\">\r\n<p class=\"textbox__title\">Example G: 9<span style=\"margin-left: 0.25em;\">756<\/span> \u2212 420 =<\/p>\r\n\r\n<\/header>\r\n<div class=\"textbox__content\">\r\n\r\n[latex]\\begin{array}[t]{rr}&amp;9\\,756\\\\-&amp;420\\\\ \\hline &amp;9\\, 336\\end{array}[\/latex]\r\n\r\n<\/div>\r\n<\/div>\r\n<div class=\"textbox textbox--exercises\"><header class=\"textbox__header\">\r\n<p class=\"textbox__title\">Exercise Six<\/p>\r\n\r\n<\/header>\r\n<div class=\"textbox__content\">\r\n\r\nRewrite each question in columns and find the differences. Check your work using the answer key at the end of the exercise.\r\n<ol class=\"threecolumn\" type=\"a\">\r\n \t<li>43 \u2212 21<\/li>\r\n \t<li>84 \u2212 30<\/li>\r\n \t<li>975 \u2212 21<\/li>\r\n \t<li>779 \u2212 54<\/li>\r\n \t<li>695 \u2212 173<\/li>\r\n \t<li>863 \u2212 701<\/li>\r\n \t<li>965 \u2212 152<\/li>\r\n \t<li>849 \u2212 212<\/li>\r\n<\/ol>\r\n<strong>Answers to Exercise Six<\/strong>\r\n<ol class=\"threecolumn\" type=\"a\">\r\n \t<li>22<\/li>\r\n \t<li>54<\/li>\r\n \t<li>954<\/li>\r\n \t<li>725<\/li>\r\n \t<li>522<\/li>\r\n \t<li>162<\/li>\r\n \t<li>813<\/li>\r\n \t<li>637<\/li>\r\n<\/ol>\r\n<\/div>\r\n<\/div>\r\n<h1>Topic B: Self-Test<\/h1>\r\n<strong>Mark\u00a0 \u00a0 \u00a0 \/24\u00a0\u00a0\u00a0 Aim 19\/24<\/strong>\r\n<ol type=\"A\">\r\n \t<li>Find the differences.\u00a0 Be sure to check your answers. (6 marks.)\r\n<ol class=\"threecolumn\" type=\"a\">\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;39\\\\-&amp;15\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;58\\\\-&amp;24\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;72\\\\-&amp;60\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;49\\\\-&amp;23\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;64\\\\-&amp;10\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;85\\\\-&amp;71\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n<\/ol>\r\n<\/li>\r\n \t<li>Find the differences. Be sure to check your answers. (6 marks)\r\n<ol class=\"threecolumn\" type=\"a\">\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;896\\\\-&amp; 385\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;698\\\\-&amp; 461\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;399\\\\-&amp; 202\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;467\\\\-&amp; 124\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;752\\\\-&amp; 231\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;497\\\\-&amp; 341\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n<\/ol>\r\n<\/li>\r\n \t<li>Find the differences. Be sure to check your answers. (6 marks)\r\n<ol class=\"threecolumn\" type=\"a\">\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;8 \\,627\\\\-&amp; 323\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;9 \\,875\\\\-&amp; 9 \\,251\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;9 \\,751\\\\-&amp; 7 \\,340\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;34\\, 859\\\\-&amp; 1\\, 336\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;37\\, 698 \\\\-&amp; 12\\, 540\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t<li>[latex]\\begin{array}[t]{rr}&amp;96 \\,723\\\\-&amp; 51\\, 403\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n<\/ol>\r\n<\/li>\r\n \t<li>Subtract these numbers. (6 marks)\r\n<ol class=\"twocolumn\" type=\"a\">\r\n \t<li>85 \u2212 61 =<\/li>\r\n \t<li>724 \u2212 13 =<\/li>\r\n \t<li>879\u00a0 \u2212 152 =<\/li>\r\n \t<li>4<span style=\"margin-left: 0.25em;\">957<\/span> \u2212 821 =<\/li>\r\n \t<li>94<span style=\"margin-left: 0.25em;\">658<\/span> \u2212 12<span style=\"margin-left: 0.25em;\">307<\/span> =<\/li>\r\n \t<li>89<span style=\"margin-left: 0.25em;\">653<\/span> \u2212 27<span style=\"margin-left: 0.25em;\">450<\/span> =<\/li>\r\n<\/ol>\r\n<\/li>\r\n<\/ol>\r\n<h1>Answers to Topic B Self-Test<\/h1>\r\n<ol type=\"A\">\r\n \t<li>\r\n<ol class=\"threecolumn\" type=\"a\">\r\n \t<li>24<\/li>\r\n \t<li>34<\/li>\r\n \t<li>12<\/li>\r\n \t<li>26<\/li>\r\n \t<li>54<\/li>\r\n \t<li>14<\/li>\r\n<\/ol>\r\n<\/li>\r\n \t<li>\r\n<ol class=\"threecolumn\" type=\"a\">\r\n \t<li>511<\/li>\r\n \t<li>237<\/li>\r\n \t<li>197<\/li>\r\n \t<li>343<\/li>\r\n \t<li>521<\/li>\r\n \t<li>156<\/li>\r\n<\/ol>\r\n<\/li>\r\n \t<li>\r\n<ol class=\"threecolumn\" type=\"a\">\r\n \t<li>8<span style=\"margin-left: 0.25em;\">304<\/span><\/li>\r\n \t<li>624<\/li>\r\n \t<li>2<span style=\"margin-left: 0.25em;\">411<\/span><\/li>\r\n \t<li>33<span style=\"margin-left: 0.25em;\">523<\/span><\/li>\r\n \t<li>25<span style=\"margin-left: 0.25em;\">158<\/span><\/li>\r\n \t<li>45<span style=\"margin-left: 0.25em;\">320<\/span><\/li>\r\n<\/ol>\r\n<\/li>\r\n \t<li>\r\n<ol class=\"threecolumn\" type=\"a\">\r\n \t<li>24<\/li>\r\n \t<li>711<\/li>\r\n \t<li>727<\/li>\r\n \t<li>4<span style=\"margin-left: 0.25em;\">136<\/span><\/li>\r\n \t<li>82<span style=\"margin-left: 0.25em;\">351<\/span><\/li>\r\n \t<li>62<span style=\"margin-left: 0.25em;\">203<\/span><\/li>\r\n<\/ol>\r\n<\/li>\r\n<\/ol>","rendered":"<p>You can find the difference between two large numbers using the subtraction facts you have been practicing. Always take away or subtract the number after the minus sign.<\/p>\n<p>Use these steps to complete each subtraction question.<\/p>\n<ul>\n<li>Step 1: Subtract the ones from the ones.<\/li>\n<li>Step 2: Subtract the tens from the tens.<\/li>\n<li>Step 3: Subtract the hundreds from the hundreds.<\/li>\n<li>Step 4: Subtract the thousands from the thousands.<\/li>\n<li>Step 5: Subtract the ten thousands from the ten thousands and so on.<\/li>\n<\/ul>\n<div class=\"textbox textbox--examples\">\n<header class=\"textbox__header\">\n<p class=\"textbox__title\">Example A: 57 \u2212 26<\/p>\n<\/header>\n<div class=\"textbox__content\">\n<p><strong>Step 1<\/strong>: Subtract the ones from the ones. 7 ones \u2212 6 ones = 1 one, write the answer in line with the ones in the question.<\/p>\n<p>[latex]\\begin{array}[t]{rr}&57\\\\-&26\\\\ \\hline &1\\end{array}[\/latex]<\/p>\n<p><strong>Step 2<\/strong>: Subtract the tens from the tens. 5 tens \u2212 2 tens = 3 tens<\/p>\n<p>The difference between 57 and 26 is 31.<\/p>\n<p>[latex]\\begin{array}[t]{rr}&57\\\\-&26\\\\ \\hline &31\\end{array}[\/latex]<\/p>\n<\/div>\n<\/div>\n<div class=\"textbox textbox--exercises\">\n<header class=\"textbox__header\">\n<p class=\"textbox__title\">Exercise One<\/p>\n<\/header>\n<div class=\"textbox__content\">\n<p>Find the differences. Check your work using the answer key at the end of the exercise.<\/p>\n<ol class=\"threecolumn\" type=\"a\">\n<li>[latex]\\begin{array}[t]{rr}&36\\\\-&13\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&72\\\\-&42\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&48\\\\-&22\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&55\\\\-&31\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&93\\\\-&40\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&76\\\\-&71\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&95\\\\-&62\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&39\\\\-&26\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&64\\\\-&21\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&85\\\\-&64\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&98\\\\-&73\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&76\\\\-&64\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&86\\\\-&50\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&95\\\\-&35\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&28\\\\-&17\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&69\\\\-&52\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&84\\\\-&40\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&74\\\\-&53\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&97\\\\-&83\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&89\\\\-&80\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&79\\\\-&29\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&89\\\\-&80\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&67\\\\-&61\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&48\\\\-&40\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<\/ol>\n<p><strong>Answers Exercise One<\/strong><\/p>\n<ol class=\"threecolumn\" type=\"a\">\n<li>23<\/li>\n<li>30<\/li>\n<li>26<\/li>\n<li>24<\/li>\n<li>53<\/li>\n<li>5<\/li>\n<li>33<\/li>\n<li>13<\/li>\n<li>43<\/li>\n<li>21<\/li>\n<li>25<\/li>\n<li>12<\/li>\n<li>36<\/li>\n<li>60<\/li>\n<li>11<\/li>\n<li>17<\/li>\n<li>44<\/li>\n<li>21<\/li>\n<li>14<\/li>\n<li>9<\/li>\n<li>50<\/li>\n<li>9<\/li>\n<li>6<\/li>\n<li>8<\/li>\n<\/ol>\n<\/div>\n<\/div>\n<h1>Checking Subtraction<\/h1>\n<p>You can check your subtraction. Add the answer (the difference) to the number you took away (the second number). If your subtracting was correct, the result of the adding will be the number you started with (the top number) in the subtraction question.<\/p>\n<div class=\"textbox textbox--examples\">\n<header class=\"textbox__header\">\n<p class=\"textbox__title\">Example B<\/p>\n<\/header>\n<div class=\"textbox__content\">\n<p>The difference is [latex]\\begin{array}[t]{rr}&928\\\\-&416\\\\ \\hline&512\\end{array}[\/latex]<\/p>\n<p>To check, add 512 to 416.<\/p>\n<p>[latex]\\begin{array}[t]{rr}&512\\\\+&416\\\\ \\hline&928\\end{array}[\/latex]<\/p>\n<\/div>\n<\/div>\n<div class=\"textbox textbox--exercises\">\n<header class=\"textbox__header\">\n<p class=\"textbox__title\">Exercise Two<\/p>\n<\/header>\n<div class=\"textbox__content\">\n<p>Find the differences. Check your work by adding and then by using the answer key at the end of the exercise.<\/p>\n<ol class=\"threecolumn\" type=\"a\">\n<li>[latex]\\begin{array}[t]{rr}&87\\\\-&36\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&29\\\\-&21\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&48\\\\-&40\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&99\\\\-&63\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&75\\\\-&45\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&73\\\\-&20\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&92\\\\-&21\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&58\\\\-&27\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&84\\\\-&23\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&69\\\\-&38\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&45\\\\-&23\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&49\\\\-&19\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&59\\\\-&14\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&89\\\\-&63\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&88\\\\-&15\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&56\\\\-&44\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&96\\\\-&75\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&37\\\\-&17\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&70\\\\-&50\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&38\\\\-&24\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&31\\\\-&10\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&27\\\\-&12\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&74\\\\-&53\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&45\\\\-&20\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<\/ol>\n<p><strong>Answers to Exercise Two<\/strong><\/p>\n<ol class=\"threecolumn\" type=\"a\">\n<li>51<\/li>\n<li>8<\/li>\n<li>8<\/li>\n<li>36<\/li>\n<li>30<\/li>\n<li>53<\/li>\n<li>71<\/li>\n<li>31<\/li>\n<li>61<\/li>\n<li>31<\/li>\n<li>22<\/li>\n<li>30<\/li>\n<li>45<\/li>\n<li>26<\/li>\n<li>73<\/li>\n<li>12<\/li>\n<li>21<\/li>\n<li>20<\/li>\n<li>20<\/li>\n<li>14<\/li>\n<li>21<\/li>\n<li>15<\/li>\n<li>21<\/li>\n<li>25<\/li>\n<\/ol>\n<\/div>\n<\/div>\n<div class=\"textbox textbox--examples\">\n<header class=\"textbox__header\">\n<p class=\"textbox__title\">Example C: 696 \u2212 251 =<\/p>\n<\/header>\n<div class=\"textbox__content\">\n<p>Use these steps to complete each subtraction question.<\/p>\n<p><strong>Step 1<\/strong>: Subtract the ones from the ones. 6 ones \u2212 1 one = 5 ones<\/p>\n<p>[latex]\\begin{array}[t]{rr}&696\\\\-&251\\\\ \\hline &5 \\end{array}[\/latex]<\/p>\n<p><strong>Step 2<\/strong>: Subtract the tens from the tens. 9 tens \u2212 5 tens = 4 tens<\/p>\n<p>[latex]\\begin{array}[t]{rr}& 696\\\\-&251\\\\ \\hline &45 \\end{array}[\/latex]<\/p>\n<p><strong>Step 3:<\/strong> Subtract the hundreds from the hundreds.<\/p>\n<p>6 hundreds \u2212 2 hundreds = 4 hundreds<\/p>\n<p>[latex]\\begin{array}[t]{rr}& 696\\\\-&251\\\\ \\hline &445 \\end{array}[\/latex]<\/p>\n<p>The difference between 696 and 251 is 445.<\/p>\n<\/div>\n<\/div>\n<div class=\"textbox textbox--exercises\">\n<header class=\"textbox__header\">\n<p class=\"textbox__title\">Exercise Three<\/p>\n<\/header>\n<div class=\"textbox__content\">\n<p>Find the differences. Check your work using the answer key at the end of the exercise.<\/p>\n<ol class=\"threecolumn\" type=\"a\">\n<li>[latex]\\begin{array}[t]{rr}&995\\\\-&452\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&877\\\\-&342\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&788\\\\-&615\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&987\\\\-&243\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&549\\\\-&131\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&806\\\\-&204\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&953\\\\-&603\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&569\\\\-&403\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&874\\\\-&650\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&269\\\\-&159\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&485\\\\-&203\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&381\\\\-&270\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&796\\\\-&172\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&864\\\\-&531\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&963\\\\-&810\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&957\\\\-&342\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&837\\\\-&410\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&528\\\\-&208\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&549\\\\-&120\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&627\\\\-&523\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&849\\\\-&246\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&175\\\\-&163\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&937\\\\-&224\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&875\\\\-&252\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<\/ol>\n<p><strong>Answers to Exercise Three<\/strong><\/p>\n<ol class=\"threecolumn\" type=\"a\">\n<li>543<\/li>\n<li>535<\/li>\n<li>173<\/li>\n<li>744<\/li>\n<li>418<\/li>\n<li>602<\/li>\n<li>350<\/li>\n<li>166<\/li>\n<li>224<\/li>\n<li>110<\/li>\n<li>282<\/li>\n<li>111<\/li>\n<li>624<\/li>\n<li>333<\/li>\n<li>153<\/li>\n<li>615<\/li>\n<li>427<\/li>\n<li>320<\/li>\n<li>429<\/li>\n<li>104<\/li>\n<li>603<\/li>\n<li>12<\/li>\n<li>713<\/li>\n<li>623<\/li>\n<\/ol>\n<\/div>\n<\/div>\n<div class=\"textbox textbox--exercises\">\n<header class=\"textbox__header\">\n<p class=\"textbox__title\">Exercise Four<\/p>\n<\/header>\n<div class=\"textbox__content\">\n<p>Find the differences. Check your work using the answer key at the end of the exercise.<\/p>\n<ol class=\"threecolumn\" type=\"a\">\n<li>[latex]\\begin{array}[t]{rr}&543\\\\-&132\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&752\\\\-&150\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}& 328\\\\-&115\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}& 758\\\\-&341\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&587\\\\-&425\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&857\\\\-&143\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&545\\\\-&302\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&466\\\\-&115\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&964\\\\-&231\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&679\\\\-&424\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&757\\\\-&136\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&467\\\\-&132\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<\/ol>\n<p><strong>Answers to Exercise Four<\/strong><\/p>\n<ol class=\"threecolumn\" type=\"a\">\n<li>411<\/li>\n<li>602<\/li>\n<li>213<\/li>\n<li>417<\/li>\n<li>162<\/li>\n<li>714<\/li>\n<li>243<\/li>\n<li>351<\/li>\n<li>733<\/li>\n<li>255<\/li>\n<li>621<\/li>\n<li>335<\/li>\n<\/ol>\n<\/div>\n<\/div>\n<p>Use these steps to complete each subtraction question:<\/p>\n<div class=\"textbox textbox--examples\">\n<header class=\"textbox__header\">\n<p class=\"textbox__title\">Example D: 4<span style=\"margin-left: 0.25em;\">628<\/span> \u2212 2<span style=\"margin-left: 0.25em;\">604<\/span> =<\/p>\n<\/header>\n<div class=\"textbox__content\">\n<p><strong>Step 1:<\/strong> Subtract the ones from the ones. 8 ones \u2212 4 ones = 4 ones<\/p>\n<p>[latex]\\begin{array}[t]{rr}&4\\, 628 \\\\\u2212 &2\\, 604\\\\ \\hline& 4 \\end{array}[\/latex]<\/p>\n<p><strong>Step 2<\/strong>: Subtract the tens from the tens. 2 tens \u2212 0 tens = 2 tens<\/p>\n<p>[latex]\\begin{array}[t]{rr}&4\\, 628 \\\\\u2212& 2\\, 604\\\\ \\hline &24 \\end{array}[\/latex]<\/p>\n<p><strong>Step 3<\/strong>: Subtract the hundreds from the hundreds.<\/p>\n<p>6 hundreds \u2212 6 hundreds = 0 hundreds<\/p>\n<p>[latex]\\begin{array}[t]{rr}&4\\, 628 \\\\\u2212& 2\\, 604\\\\ \\hline &024 \\end{array}[\/latex]<\/p>\n<p>The 0 must be placed in the answer to hold the hundreds place.<\/p>\n<p><strong>Step 4<\/strong>: Subtract the thousands from the thousands.<\/p>\n<p>4 thousands \u2212 2 thousands = 2 thousands<\/p>\n<p>[latex]\\begin{array}[t]{rr}&4\\, 628 \\\\\u2212& 2\\, 604\\\\ \\hline &2\\,024 \\end{array}[\/latex]<\/p>\n<p>The difference between 4<span style=\"margin-left: 0.25em;\">628<\/span> and 2<span style=\"margin-left: 0.25em;\">604<\/span> is 2<span style=\"margin-left: 0.25em;\">024<\/span>.<\/p>\n<\/div>\n<\/div>\n<div class=\"textbox textbox--examples\">\n<header class=\"textbox__header\">\n<p class=\"textbox__title\">Example E: 79<span style=\"margin-left: 0.25em;\">486<\/span> \u2212 42<span style=\"margin-left: 0.25em;\">104<\/span> =<\/p>\n<\/header>\n<div class=\"textbox__content\">\n<p><strong>Step 1<\/strong>: Subtract the ones from the ones. 6 ones \u2212 4 ones = 2 ones<\/p>\n<p>[latex]\\begin{array}[t]{rr}&79\\, 486 \\\\\u2212& 42\\, 104\\\\ \\hline& 2 \\end{array}[\/latex]<\/p>\n<p><strong>Step 2<\/strong>: Subtract the tens from the tens. 8 tens \u2212 0 tens = 8 tens<\/p>\n<p>[latex]\\begin{array}[t]{rr}&79\\, 486 \\\\\u2212 &42\\, 104\\\\ \\hline &82 \\end{array}[\/latex]<\/p>\n<p><strong>Step 3<\/strong>: Subtract the hundreds from the hundreds.<\/p>\n<p>4 hundreds \u2212 1 hundreds = 3 hundreds<\/p>\n<p>[latex]\\begin{array}[t]{rr}&79\\, 486 \\\\\u2212 &42\\, 104\\\\ \\hline &382 \\end{array}[\/latex]<\/p>\n<p><strong>Step 4<\/strong>: Subtract the thousands from the thousands.<\/p>\n<p>9 thousands \u2212 2 thousands = 7 thousands<\/p>\n<p>[latex]\\begin{array}[t]{rr}&79\\, 486 \\\\\u2212 &42\\, 104\\\\ \\hline& 7\\,382 \\end{array}[\/latex]<\/p>\n<p>Step 5: Subtract the ten thousands from the ten thousands.<\/p>\n<p>7 ten thousands \u2212 4 ten thousands = 3 ten thousands<\/p>\n<p>[latex]\\begin{array}[t]{rr}&79\\, 486 \\\\\u2212 &42\\, 104\\\\ \\hline &37\\,382 \\end{array}[\/latex]<\/p>\n<p>The difference between 79<span style=\"margin-left: 0.25em;\">486<\/span> and 42<span style=\"margin-left: 0.25em;\">104<\/span> is 37<span style=\"margin-left: 0.25em;\">382<\/span>.<\/p>\n<\/div>\n<\/div>\n<div class=\"textbox textbox--exercises\">\n<header class=\"textbox__header\">\n<p class=\"textbox__title\">Exercise Five<\/p>\n<\/header>\n<div class=\"textbox__content\">\n<ol class=\"threecolumn\" type=\"a\">\n<li>[latex]\\begin{array}[t]{rr}&8\\, 646 \\\\-& 542\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&7\\, 295 \\\\-& 231\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&9\\, 738 \\\\-& 215\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&6\\, 498 \\\\-& 253\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&3\\, 674 \\\\-& 2\\, 503\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&3 \\,219 \\\\-& 2\\, 116\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&6\\, 456 \\\\-& 5\\,\\ 234\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&1\\, 758 \\\\-& 1\\, 431\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&8\\, 954 \\\\-& 2\\, 151\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&8\\, 975 \\\\-& 4\\, 732\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&7\\, 296 \\\\-& 5\\, 081\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&9\\, 678 \\\\-& 4\\, 316\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&9\\, 489 \\\\-& 2\\, 079\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&7\\, 638 \\\\-& 6\\, 218\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&4\\, 759 \\\\-& 1\\, 136\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&8\\, 275 \\\\-& 4\\, 073\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<\/ol>\n<p><strong>Answers to Exercise Five<\/strong><\/p>\n<ol class=\"threecolumn\" type=\"a\">\n<li>8<span style=\"margin-left: 0.25em;\">104<\/span><\/li>\n<li>7<span style=\"margin-left: 0.25em;\">064<\/span><\/li>\n<li>9<span style=\"margin-left: 0.25em;\">523<\/span><\/li>\n<li>6<span style=\"margin-left: 0.25em;\">245<\/span><\/li>\n<li>1<span style=\"margin-left: 0.25em;\">171<\/span><\/li>\n<li>1<span style=\"margin-left: 0.25em;\">103<\/span><\/li>\n<li>1<span style=\"margin-left: 0.25em;\">222<\/span><\/li>\n<li>327<\/li>\n<li>6<span style=\"margin-left: 0.25em;\">803<\/span><\/li>\n<li>4<span style=\"margin-left: 0.25em;\">243<\/span><\/li>\n<li>2<span style=\"margin-left: 0.25em;\">215<\/span><\/li>\n<li>5<span style=\"margin-left: 0.25em;\">362<\/span><\/li>\n<li>7<span style=\"margin-left: 0.25em;\">410<\/span><\/li>\n<li>1<span style=\"margin-left: 0.25em;\">420<\/span><\/li>\n<li>3<span style=\"margin-left: 0.25em;\">623<\/span><\/li>\n<li>4<span style=\"margin-left: 0.25em;\">202<\/span><\/li>\n<\/ol>\n<\/div>\n<\/div>\n<p>If a subtraction question is written with the numbers side by side, rewrite the question in columns. Put the ones under the ones, the tens under the tens, the hundreds under the hundreds, and so on. The first number is always the top number and the second number is always written below the first number.<\/p>\n<div class=\"textbox textbox--examples\">\n<header class=\"textbox__header\">\n<p class=\"textbox__title\">Example F: 687 \u2212 52 =<\/p>\n<\/header>\n<div class=\"textbox__content\">\n<p>[latex]\\begin{array}[t]{rr} &687\\\\-&52\\\\ \\hline &635\\end{array}[\/latex]<\/p>\n<\/div>\n<\/div>\n<div class=\"textbox textbox--examples\">\n<header class=\"textbox__header\">\n<p class=\"textbox__title\">Example G: 9<span style=\"margin-left: 0.25em;\">756<\/span> \u2212 420 =<\/p>\n<\/header>\n<div class=\"textbox__content\">\n<p>[latex]\\begin{array}[t]{rr}&9\\,756\\\\-&420\\\\ \\hline &9\\, 336\\end{array}[\/latex]<\/p>\n<\/div>\n<\/div>\n<div class=\"textbox textbox--exercises\">\n<header class=\"textbox__header\">\n<p class=\"textbox__title\">Exercise Six<\/p>\n<\/header>\n<div class=\"textbox__content\">\n<p>Rewrite each question in columns and find the differences. Check your work using the answer key at the end of the exercise.<\/p>\n<ol class=\"threecolumn\" type=\"a\">\n<li>43 \u2212 21<\/li>\n<li>84 \u2212 30<\/li>\n<li>975 \u2212 21<\/li>\n<li>779 \u2212 54<\/li>\n<li>695 \u2212 173<\/li>\n<li>863 \u2212 701<\/li>\n<li>965 \u2212 152<\/li>\n<li>849 \u2212 212<\/li>\n<\/ol>\n<p><strong>Answers to Exercise Six<\/strong><\/p>\n<ol class=\"threecolumn\" type=\"a\">\n<li>22<\/li>\n<li>54<\/li>\n<li>954<\/li>\n<li>725<\/li>\n<li>522<\/li>\n<li>162<\/li>\n<li>813<\/li>\n<li>637<\/li>\n<\/ol>\n<\/div>\n<\/div>\n<h1>Topic B: Self-Test<\/h1>\n<p><strong>Mark\u00a0 \u00a0 \u00a0 \/24\u00a0\u00a0\u00a0 Aim 19\/24<\/strong><\/p>\n<ol type=\"A\">\n<li>Find the differences.\u00a0 Be sure to check your answers. (6 marks.)\n<ol class=\"threecolumn\" type=\"a\">\n<li>[latex]\\begin{array}[t]{rr}&39\\\\-&15\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&58\\\\-&24\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&72\\\\-&60\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&49\\\\-&23\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&64\\\\-&10\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&85\\\\-&71\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<\/ol>\n<\/li>\n<li>Find the differences. Be sure to check your answers. (6 marks)\n<ol class=\"threecolumn\" type=\"a\">\n<li>[latex]\\begin{array}[t]{rr}&896\\\\-& 385\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&698\\\\-& 461\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&399\\\\-& 202\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&467\\\\-& 124\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&752\\\\-& 231\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&497\\\\-& 341\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<\/ol>\n<\/li>\n<li>Find the differences. Be sure to check your answers. (6 marks)\n<ol class=\"threecolumn\" type=\"a\">\n<li>[latex]\\begin{array}[t]{rr}&8 \\,627\\\\-& 323\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&9 \\,875\\\\-& 9 \\,251\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&9 \\,751\\\\-& 7 \\,340\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&34\\, 859\\\\-& 1\\, 336\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&37\\, 698 \\\\-& 12\\, 540\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<li>[latex]\\begin{array}[t]{rr}&96 \\,723\\\\-& 51\\, 403\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<\/ol>\n<\/li>\n<li>Subtract these numbers. (6 marks)\n<ol class=\"twocolumn\" type=\"a\">\n<li>85 \u2212 61 =<\/li>\n<li>724 \u2212 13 =<\/li>\n<li>879\u00a0 \u2212 152 =<\/li>\n<li>4<span style=\"margin-left: 0.25em;\">957<\/span> \u2212 821 =<\/li>\n<li>94<span style=\"margin-left: 0.25em;\">658<\/span> \u2212 12<span style=\"margin-left: 0.25em;\">307<\/span> =<\/li>\n<li>89<span style=\"margin-left: 0.25em;\">653<\/span> \u2212 27<span style=\"margin-left: 0.25em;\">450<\/span> =<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n<h1>Answers to Topic B Self-Test<\/h1>\n<ol type=\"A\">\n<li>\n<ol class=\"threecolumn\" type=\"a\">\n<li>24<\/li>\n<li>34<\/li>\n<li>12<\/li>\n<li>26<\/li>\n<li>54<\/li>\n<li>14<\/li>\n<\/ol>\n<\/li>\n<li>\n<ol class=\"threecolumn\" type=\"a\">\n<li>511<\/li>\n<li>237<\/li>\n<li>197<\/li>\n<li>343<\/li>\n<li>521<\/li>\n<li>156<\/li>\n<\/ol>\n<\/li>\n<li>\n<ol class=\"threecolumn\" type=\"a\">\n<li>8<span style=\"margin-left: 0.25em;\">304<\/span><\/li>\n<li>624<\/li>\n<li>2<span style=\"margin-left: 0.25em;\">411<\/span><\/li>\n<li>33<span style=\"margin-left: 0.25em;\">523<\/span><\/li>\n<li>25<span style=\"margin-left: 0.25em;\">158<\/span><\/li>\n<li>45<span style=\"margin-left: 0.25em;\">320<\/span><\/li>\n<\/ol>\n<\/li>\n<li>\n<ol class=\"threecolumn\" type=\"a\">\n<li>24<\/li>\n<li>711<\/li>\n<li>727<\/li>\n<li>4<span style=\"margin-left: 0.25em;\">136<\/span><\/li>\n<li>82<span style=\"margin-left: 0.25em;\">351<\/span><\/li>\n<li>62<span style=\"margin-left: 0.25em;\">203<\/span><\/li>\n<\/ol>\n<\/li>\n<\/ol>\n","protected":false},"author":90,"menu_order":2,"template":"","meta":{"pb_show_title":"on","pb_short_title":"","pb_subtitle":"","pb_authors":[],"pb_section_license":""},"chapter-type":[],"contributor":[],"license":[],"class_list":["post-63","chapter","type-chapter","status-publish","hentry"],"part":59,"_links":{"self":[{"href":"https:\/\/opentextbc.ca\/alfm2\/wp-json\/pressbooks\/v2\/chapters\/63","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/opentextbc.ca\/alfm2\/wp-json\/pressbooks\/v2\/chapters"}],"about":[{"href":"https:\/\/opentextbc.ca\/alfm2\/wp-json\/wp\/v2\/types\/chapter"}],"author":[{"embeddable":true,"href":"https:\/\/opentextbc.ca\/alfm2\/wp-json\/wp\/v2\/users\/90"}],"version-history":[{"count":21,"href":"https:\/\/opentextbc.ca\/alfm2\/wp-json\/pressbooks\/v2\/chapters\/63\/revisions"}],"predecessor-version":[{"id":717,"href":"https:\/\/opentextbc.ca\/alfm2\/wp-json\/pressbooks\/v2\/chapters\/63\/revisions\/717"}],"part":[{"href":"https:\/\/opentextbc.ca\/alfm2\/wp-json\/pressbooks\/v2\/parts\/59"}],"metadata":[{"href":"https:\/\/opentextbc.ca\/alfm2\/wp-json\/pressbooks\/v2\/chapters\/63\/metadata\/"}],"wp:attachment":[{"href":"https:\/\/opentextbc.ca\/alfm2\/wp-json\/wp\/v2\/media?parent=63"}],"wp:term":[{"taxonomy":"chapter-type","embeddable":true,"href":"https:\/\/opentextbc.ca\/alfm2\/wp-json\/pressbooks\/v2\/chapter-type?post=63"},{"taxonomy":"contributor","embeddable":true,"href":"https:\/\/opentextbc.ca\/alfm2\/wp-json\/wp\/v2\/contributor?post=63"},{"taxonomy":"license","embeddable":true,"href":"https:\/\/opentextbc.ca\/alfm2\/wp-json\/wp\/v2\/license?post=63"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}