Unit 3: Subtraction
Unit 3 Review: Subtraction
You will now practice all of the skills you learned in Unit 3. Check your work using the answer key at the end of the review.
- Find the differences.
- [latex]\begin{array}[t]{rr}&58\\-&24\\ \hline \\ \end{array}[/latex]
- [latex]\begin{array}[t]{rr}&99\\-&65\\ \hline \\ \end{array}[/latex]
- [latex]\begin{array}[t]{rr}&98\\-&75\\ \hline \\ \end{array}[/latex]
- [latex]\begin{array}[t]{rr}&87\\-&34\\ \hline \\ \end{array}[/latex]
- [latex]\begin{array}[t]{rr}&45\\-&21\\ \hline \\ \end{array}[/latex]
- [latex]\begin{array}[t]{rr}&76\\-&35\\ \hline \\ \end{array}[/latex]
- Find the differences.
- [latex]\begin{array}[t]{rr}&995\\-&423\\ \hline \\ \end{array}[/latex]
- [latex]\begin{array}[t]{rr}&987\\-&316\\ \hline \\ \end{array}[/latex]
- [latex]\begin{array}[t]{rr}&579\\-&458\\ \hline \\ \end{array}[/latex]
- [latex]\begin{array}[t]{rr}&877\\-&602\\ \hline \\ \end{array}[/latex]
- [latex]\begin{array}[t]{rr}&468\\-&432\\ \hline \\ \end{array}[/latex]
- [latex]\begin{array}[t]{rr}&686\\-&271\\ \hline \\ \end{array}[/latex]
- Find the differences.
- [latex]\begin{array}[t]{rr}&1\, 265\\-& 541\\ \hline \\ \end{array}[/latex]
- [latex]\begin{array}[t]{rr}&4\, 587 \\-& 534\\ \hline \\ \end{array}[/latex]
- [latex]\begin{array}[t]{rr}&6 \,889 \\-& 2\, 506\\ \hline \\ \end{array}[/latex]
- [latex]\begin{array}[t]{rr}&7 \,936 \\-& 5 \,104\\ \hline \\ \end{array}[/latex]
- [latex]\begin{array}[t]{rr}&62\, 589\\-& 1\, 375\\ \hline \\ \end{array}[/latex]
- [latex]\begin{array}[t]{rr}&54 \,567 \\-& 3 \,253\\ \hline \\ \end{array}[/latex]
- [latex]\begin{array}[t]{rr}&44 \,293 \\-& 13 \,701\\ \hline \\ \end{array}[/latex]
- [latex]\begin{array}[t]{rr}&86 \,477 \\-&16 \,216\\ \hline \\ \end{array}[/latex]
- [latex]\begin{array}[t]{rr}&37 \,516 \\-& 21\, 413\\ \hline \\ \end{array}[/latex]
- Rewrite each question in columns and find the differences.
- 968 − 343 =
- 865 − 432 =
- 7482 − 5061 =
- 11589 − 5326 =
- 97383 − 42362 =
- 109861 − 58240 =
- Borrow from the number in the shaded box.
-
ten thousands thousands hundreds tens ones 392 -
ten thousands thousands hundreds tens ones 821 -
ten thousands thousands hundreds tens ones 6739 -
ten thousands thousands hundreds tens ones 4528 -
ten thousands thousands hundreds tens ones 24986 -
ten thousands thousands hundreds tens ones 47182
-
- Borrow from the number in the shaded box.
-
ten thousands thousands hundreds tens ones 302 -
ten thousands thousands hundreds tens ones 706 -
ten thousands thousands hundreds tens ones 7019 -
ten thousands thousands hundreds tens ones 5034 -
ten thousands thousands hundreds tens ones 40154 -
ten thousands thousands hundreds tens ones 20 428 -
hundred thousands ten thousands thousands hundreds tens ones 904539 -
hundred thousands ten thousands thousands hundreds tens ones 406217
-
- Find the differences.
- [latex]\begin{array}[t]{rr}&54\\-&5\\ \hline \\ \end{array}[/latex]
- [latex]\begin{array}[t]{rr}&63\\-&6\\ \hline \\ \end{array}[/latex]
- [latex]\begin{array}[t]{rr}&82\\-&9\\ \hline \\ \end{array}[/latex]
- [latex]\begin{array}[t]{rr}&25\\-&17\\ \hline \\ \end{array}[/latex]
- [latex]\begin{array}[t]{rr}&92\\-&53\\ \hline \\ \end{array}[/latex]
- [latex]\begin{array}[t]{rr}&58\\-&39\\ \hline \\ \end{array}[/latex]
- Find the differences.
- [latex]\begin{array}[t]{rr}&172\\-&16\\ \hline \\ \end{array}[/latex]
- [latex]\begin{array}[t]{rr}&263\\-&59\\ \hline \\ \end{array}[/latex]
- [latex]\begin{array}[t]{rr}&974\\-&65\\ \hline \\ \end{array}[/latex]
- [latex]\begin{array}[t]{rr}&629\\-&349\\ \hline \\ \end{array}[/latex]
- [latex]\begin{array}[t]{rr}&956\\-&392\\ \hline \\ \end{array}[/latex]
- [latex]\begin{array}[t]{rr}&754\\-&636\\ \hline \\ \end{array}[/latex]
- Find the differences. Check your answers using addition.
- [latex]\begin{array}[t]{rr}&83\\-&15\\ \hline \\ \end{array}[/latex] check:
- [latex]\begin{array}[t]{rr}&639\\-&484\\ \hline \\ \end{array}[/latex] check:
- [latex]\begin{array}[t]{rr}&1\, 041\\-&436\\ \hline \\ \end{array}[/latex] check:
- [latex]\begin{array}[t]{rr}&7 \,317 \\-& 5\, 293\\ \hline \\ \end{array}[/latex] check:
- [latex]\begin{array}[t]{rr}&45 \,398\\-& 2\, 737\\ \hline \\ \end{array}[/latex] check:
- [latex]\begin{array}[t]{rr}&84 \,902 \\-& 24\, 290\\ \hline \\ \end{array}[/latex] check:
- Find the differences.
- [latex]\begin{array}[t]{rr}&251\\-&84\\ \hline \\ \end{array}[/latex]
- [latex]\begin{array}[t]{rr}&286\\-&98\\ \hline \\ \end{array}[/latex]
- [latex]\begin{array}[t]{rr}&256\\-&79\\ \hline \\ \end{array}[/latex]
- [latex]\begin{array}[t]{rr}&427\\-&328\\ \hline \\ \end{array}[/latex]
- [latex]\begin{array}[t]{rr}&970\\-&476\\ \hline \\ \end{array}[/latex]
- [latex]\begin{array}[t]{rr}&534\\-&296\\ \hline \\ \end{array}[/latex]
- Find the differences.
- [latex]\begin{array}[t]{rr}&3\, 614\\-& 923\\ \hline \\ \end{array}[/latex]
- [latex]\begin{array}[t]{rr}&5 \,132 \\-& 747\\ \hline \\ \end{array}[/latex]
- [latex]\begin{array}[t]{rr}&1 \,263 \\-& 486\\ \hline \\ \end{array}[/latex]
- [latex]\begin{array}[t]{rr}&6 \,163 \\-& 2\, 178\\ \hline \\ \end{array}[/latex]
- [latex]\begin{array}[t]{rr}&6 \,311 \\-& 3 \,784\\ \hline \\ \end{array}[/latex]
- [latex]\begin{array}[t]{rr}&7 \,234 \\-& 2 \,659\\ \hline \\ \end{array}[/latex]
- [latex]\begin{array}[t]{rr}&71 \,236 \\-& 7 \,852\\ \hline \\ \end{array}[/latex]
- [latex]\begin{array}[t]{rr}&34 \,529 \\-& 4 \,868\\ \hline \\ \end{array}[/latex]
- [latex]\begin{array}[t]{rr}&57 \,389 \\-& 3 \,894\\ \hline \\ \end{array}[/latex]
- [latex]\begin{array}[t]{rr}&91 \,821 \\-& 76\, 953\\ \hline \\ \end{array}[/latex]
- [latex]\begin{array}[t]{rr}&81 \,153 \\-& 43 \,569\\ \hline \\ \end{array}[/latex]
- [latex]\begin{array}[t]{rr}&92 \,763 \\-& 34 \,387\\ \hline \\ \end{array}[/latex]
- Find the differences.
- [latex]\begin{array}[t]{rr}&403\\-&16\\ \hline \\ \end{array}[/latex]
- [latex]\begin{array}[t]{rr}&800\\-&75\\ \hline \\ \end{array}[/latex]
- [latex]\begin{array}[t]{rr}&600\\-&124\\ \hline \\ \end{array}[/latex]
- [latex]\begin{array}[t]{rr}&804\\-&326\\ \hline \\ \end{array}[/latex]
- [latex]\begin{array}[t]{rr}&901\\-&258\\ \hline \\ \end{array}[/latex]
- [latex]\begin{array}[t]{rr}&8\, 035\\-& 652\\ \hline \\ \end{array}[/latex]
- [latex]\begin{array}[t]{rr}&3 \,600 \\-& 1\, 135\\ \hline \\ \end{array}[/latex]
- [latex]\begin{array}[t]{rr}&7 \,065 \\-& 6 \,130\\ \hline \\ \end{array}[/latex]
- [latex]\begin{array}[t]{rr}&40 \,862 \\-& 3 \,978\\ \hline \\ \end{array}[/latex]
- [latex]\begin{array}[t]{rr}&50 \,126 \\-& 9 \,238\\ \hline \\ \end{array}[/latex]
- [latex]\begin{array}[t]{rr}&80 \,965 \\-& 67 \,836\\ \hline \\ \end{array}[/latex]
- [latex]\begin{array}[t]{rr}&30 \,642 \\-& 19 \,637\\ \hline \\ \end{array}[/latex]
- Rewrite each question in columns and find the difference.
- 845 − 659 =
- 1920 − 731 =
- 6927 − 2765 =
- 19053 − 8954 =
- 73050 − 36174 =
- 86295 − 46049 =
- Estimate the differences. Round the numbers before you subtract.
- [latex]\begin{array}[t]{rr}&357\\-&129\\ \hline \\ \end{array}[/latex]
- [latex]\begin{array}[t]{rr}&3 546\\-& 866\\ \hline \\ \end{array}[/latex]
- [latex]\begin{array}[t]{rr}&2 765 \\-& 249\\ \hline \\ \end{array}[/latex]
- [latex]\begin{array}[t]{rr}&6 263 \\-& 2 118\\ \hline \\ \end{array}[/latex]
- [latex]\begin{array}[t]{rr}&63 947 \\-& 5 689\\ \hline \\ \end{array}[/latex]
- [latex]\begin{array}[t]{rr}&47 296 \\-& 21 592\\ \hline \\ \end{array}[/latex]
- Use the 5 problem solving steps. Look for key words and patterns to help you choose the correct operation. Estimate the answer using rounded numbers if the numbers have 2 digits or more.
- Last Friday, 1259 students and 339 parents went to the hockey game. How many students and parents were at the game?
- The Laerdal Tunnel in Norway is the longest road tunnel in the world. It is 24510 metres long. The Zhongnanshan Tunnel in China is the second longest road tunnel in the world. It is 18040 metres long. How much longer is the Laerdal Tunnel?
- Li Chiu bought school clothes for her children. She spent $46 at the department store, $40 at the shoe store and $78 at the discount store. How much did Li spend altogether?
- A truck weighed 4267 kilograms when loaded with dirt. When the truck is empty it weighs 2189 kilograms. How much did the dirt weigh?
- Find the sum or difference for each question.
- 776 + 634 − 478 =
- 3714 − 819 + 496 =
- 7413 − 249 + 382 =
- 6415 + 5829 − 1756 =
- Use the 5 problem solving steps. Look for key words and patterns to help you choose the correct operation. Estimate the answer using rounded numbers if the numbers have 2 digits or more. Show all your work.
- Two weeks ago, Van opened a new bank account and deposited $295. He paid $146 for his gas bill. Van then deposited $1632 in his account. How much money is in his account?
- Michel has 1532 metres of fencing. He needs to fence his garden which measures 253 metres long and 187 metres wide. Does he have enough fencing? How much fencing will be left over?
Answers to Unit 3 Review
-
- 34
- 34
- 23
- 53
- 24
- 41
-
- 572
- 671
- 121
- 275
- 36
- 415
-
- 724
- 4053
- 4383
- 2832
- 61214
- 51314
- 30592
- 70261
- 16103
-
- 625
- 433
- 2421
- 6263
- 55021
- 51621
-
-
ten thousands thousands hundreds tens ones 392 3 9 2 3 8 12 -
ten thousands thousands hundreds tens ones 821 8 2 1 8 1 11 -
ten thousands thousands hundreds tens ones 6739 6 7 3 9 6 6 13 9 -
ten thousands thousands hundreds tens ones 4528 4 5 2 8 4 4 12 8 -
ten thousands thousands hundreds tens ones 24986 2 4 9 8 6 2 3 19 8 6 -
ten thousands thousands hundreds tens ones 47182 4 7 1 8 2 4 6 11 8 2
-
-
-
ten thousands thousands hundreds tens ones 302 3 0 2 2 10 2 2 9 12 -
ten thousands thousands hundreds tens ones 706 7 0 6 6 10 16 6 9 16 -
ten thousands thousands hundreds tens ones 7019 7 0 1 9 6 10 1 9 6 9 11 9 -
ten thousands thousands hundreds tens ones 5034 5 0 3 4 4 10 3 4 4 9 13 4 -
ten thousands thousands hundreds tens ones 40154 4 0 1 5 4 3 10 1 5 4 3 9 11 5 4 -
ten thousands thousands hundreds tens ones 20 428 2 0 4 2 8 1 10 4 2 8 1 9 14 2 8 -
hundred thousands ten thousands thousands hundreds tens ones 904539 9 0 4 5 3 9 8 10 4 5 3 9 8 9 14 5 3 9 -
hundred thousands ten thousands thousands hundreds tens ones 406217 4 0 6 2 1 7 3 10 6 2 1 7 3 9 16 2 1 7
-
-
- 49
- 57
- 73
- 8
- 39
- 19
-
- 156
- 204
- 909
- 280
- 564
- 118
-
- 68
- 155
- 605
- 2024
- 42661
- 60612
-
- 167
- 188
- 177
- 99
- 494
- 238
-
- 2691
- 4385
- 777
- 3985
- 2527
- 4575
- 63384
- 29661
- 53495
- 14868
- 37584
- 58376
-
- 387
- 725
- 476
- 478
- 643
- 7383
- 2465
- 935
- 36884
- 40888
- 13129
- 11005
-
- 186
- 1189
- 4162
- 10099
- 36876
- 40246
-
- 400 − 100 = 300
- 3500 − 900 = 2600
- 2800 − 200 = 2 600
- 6000 − 2000 = 4000
- 64000 − 6000 = 58000
- 50000</span< − 20000 = 30000
-
- 1598 students
- 6470 metres
- $164
- 2078 kilograms
-
- 932
- 3391
- 7546
- 10488
-
- $1781
- Yes, 652 metres leftover
CONGRATULATIONS!!
Now you have finished Unit 3.
TEST TIME!
Ask your instructor for the Practice Test for this unit.
Once you’ve done the practice test, you need to do the unit 3 test.
Again, ask your instructor for this.
Good luck!