{"id":57,"date":"2022-08-16T19:47:00","date_gmt":"2022-08-16T23:47:00","guid":{"rendered":"https:\/\/opentextbc.ca\/alfm2\/?post_type=chapter&p=57"},"modified":"2025-09-18T13:58:19","modified_gmt":"2025-09-18T17:58:19","slug":"unit-2-review-addition","status":"publish","type":"chapter","link":"https:\/\/opentextbc.ca\/alfm2\/chapter\/unit-2-review-addition\/","title":{"raw":"Unit 2 Review: Addition","rendered":"Unit 2 Review: Addition"},"content":{"raw":"You will now practice all the skills you learned in Unit 2. Check your work using the answer key at the end of the review\r\n
    \r\n \t
  1. Find the sums.\r\n
      \r\n \t
    1. [latex]\\begin{array}[t]{rr}&23\\\\+&35\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t
    2. [latex]\\begin{array}[t]{rr}&47\\\\+&52\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t
    3. [latex]\\begin{array}[t]{rr}&62\\\\+&36\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t
    4. [latex]\\begin{array}[t]{rr}&51\\\\+&24\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t
    5. [latex]\\begin{array}[t]{rr}&64\\\\+&14\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t
    6. [latex]\\begin{array}[t]{rr}&53\\\\+&32\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n<\/ol>\r\n<\/li>\r\n \t
    7. Find the sums.\r\n
        \r\n \t
      1. [latex]\\begin{array}[t]{rr}&23\\\\&34\\\\+&42\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t
      2. [latex]\\begin{array}[t]{rr}&42\\\\&35\\\\+&70\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t
      3. [latex]\\begin{array}[t]{rr}&41\\\\&58\\\\+&20\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t
      4. [latex]\\begin{array}[t]{rr}&51\\\\&43\\\\+&70\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t
      5. [latex]\\begin{array}[t]{rr}&22\\\\&46\\\\+&31\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t
      6. [latex]\\begin{array}[t]{rr}&63\\\\&24\\\\+&81\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n<\/ol>\r\n<\/li>\r\n \t
      7. Find the sums.\r\n
          \r\n \t
        1. [latex]\\begin{array}[t]{rr}&518\\\\+&470\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t
        2. [latex]\\begin{array}[t]{rr}&410\\\\+&316\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t
        3. [latex]\\begin{array}[t]{rr}&820\\\\+&149\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t
        4. [latex]\\begin{array}[t]{rr}&631\\\\+&235\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t
        5. [latex]\\begin{array}[t]{rr}&240\\\\+&523\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t
        6. [latex]\\begin{array}[t]{rr}&723\\\\+&126\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n<\/ol>\r\n<\/li>\r\n \t
        7. Find the sums.\r\n
            \r\n \t
          1. [latex]\\begin{array}[t]{rr}&453\\\\&216\\\\+&320\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t
          2. [latex]\\begin{array}[t]{rr}&231\\\\&425\\\\+&313\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t
          3. [latex]\\begin{array}[t]{rr}&212\\\\&345\\\\+&831\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t
          4. [latex]\\begin{array}[t]{rr}&726\\\\&130\\\\+&443\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t
          5. [latex]\\begin{array}[t]{rr}&542\\\\&315\\\\+&641\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t
          6. [latex]\\begin{array}[t]{rr}&314\\\\&245\\\\+&630\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n<\/ol>\r\n<\/li>\r\n \t
          7. Find the sums.\r\n
              \r\n \t
            1. [latex]\\begin{array}[t]{rr}&3\\, 168\\\\+& 3\\, 220\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t
            2. [latex]\\begin{array}[t]{rr}&3\\, 782 \\\\+& 4 \\,217\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t
            3. [latex]\\begin{array}[t]{rr}&7\\, 521 \\\\+& 3\\, 167\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t
            4. [latex]\\begin{array}[t]{rr}&52\\, 163 \\\\+& 72\\, 835\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t
            5. [latex]\\begin{array}[t]{rr}&54\\, 373 \\\\+& 54\\, 625\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t
            6. [latex]\\begin{array}[t]{rr}&83\\, 245 \\\\+& 13\\, 450\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n<\/ol>\r\n<\/li>\r\n \t
            7. Find the sums.\r\n
                \r\n \t
              1. 45 + 104<\/li>\r\n \t
              2. 523 + 364<\/li>\r\n \t
              3. 5231<\/span> + 346<\/li>\r\n \t
              4. 4661<\/span> + 2138<\/span><\/li>\r\n \t
              5. 42\u00a0 +\u00a0 707\u00a0 + 350<\/li>\r\n \t
              6. 63613<\/span> + 45165<\/span><\/li>\r\n \t
              7. 22514<\/span>\u00a0 +\u00a0 43262<\/span>\u00a0 +\u00a0 21102<\/span><\/li>\r\n \t
              8. 72510<\/span> + 4127<\/span> + 13041<\/span><\/li>\r\n<\/ol>\r\n<\/li>\r\n \t
              9. Find the sums.\r\n
                  \r\n \t
                1. [latex]\\begin{array}[t]{rr}&96\\\\+&58\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t
                2. [latex]\\begin{array}[t]{rr}&87\\\\+&57\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t
                3. [latex]\\begin{array}[t]{rr}&35\\\\+&89\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t
                4. [latex]\\begin{array}[t]{rr}&48\\\\+&63\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t
                5. [latex]\\begin{array}[t]{rr}&54\\\\+&98\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t
                6. [latex]\\begin{array}[t]{rr}&37\\\\+&65\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n<\/ol>\r\n<\/li>\r\n \t
                7. Find the sums.\r\n
                    \r\n \t
                  1. [latex]\\begin{array}[t]{rr}&27\\\\&18\\\\+&35\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t
                  2. [latex]\\begin{array}[t]{rr}&52\\\\&16\\\\+&79\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t
                  3. [latex]\\begin{array}[t]{rr}&58\\\\&37\\\\+&29\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t
                  4. [latex]\\begin{array}[t]{rr}&42\\\\&59\\\\+&26\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t
                  5. [latex]\\begin{array}[t]{rr}&36\\\\&84\\\\+&57\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t
                  6. [latex]\\begin{array}[t]{rr}&21\\\\&54\\\\+&36\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n<\/ol>\r\n<\/li>\r\n \t
                  7. Find the sums.\r\n
                      \r\n \t
                    1. [latex]\\begin{array}[t]{rr}&527\\\\+&319\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t
                    2. [latex]\\begin{array}[t]{rr}&382\\\\+&476\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t
                    3. [latex]\\begin{array}[t]{rr}&3\\, 782\\\\+& 4 \\,561\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t
                    4. [latex]\\begin{array}[t]{rr}&6\\, 789 \\\\+& 4 \\,567\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t
                    5. [latex]\\begin{array}[t]{rr}&83\\, 245 \\\\+& 13\\, 876\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t
                    6. [latex]\\begin{array}[t]{rr}&52\\, 368 \\\\+& 29\\, 240\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t
                    7. [latex]\\begin{array}[t]{rr}&683\\\\&194\\\\+&276\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t
                    8. [latex]\\begin{array}[t]{rr}&483\\\\&629\\\\+&753\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t
                    9. [latex]\\begin{array}[t]{rr}&4\\, 216 \\\\&3\\, 807 \\\\+& 4\\, 498\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t
                    10. [latex]\\begin{array}[t]{rr}&11\\, 615 \\\\&12\\, 573\\\\+& 76\\, 125\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t
                    11. [latex]\\begin{array}[t]{rr}&321\\, 456 \\\\&523\\, 214 \\\\+& 212\\, 304\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t
                    12. [latex]\\begin{array}[t]{rr}&12\\, 421 \\\\&6\\, 815 \\\\+& 42\\, 916\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n<\/ol>\r\n<\/li>\r\n \t
                    13. Find the sums.\r\n
                        \r\n \t
                      1. 234 + 357 + 526 =<\/li>\r\n \t
                      2. 435 + 16 + 127 =<\/li>\r\n \t
                      3. 4118<\/span> + 2671<\/span> + 1590<\/span> =<\/li>\r\n \t
                      4. 67543<\/span> + 17069<\/span> =<\/li>\r\n \t
                      5. 4235<\/span> + 6815<\/span> + 42916<\/span> =<\/li>\r\n \t
                      6. 231262<\/span> + 64221<\/span> + 7143<\/span> =<\/li>\r\n<\/ol>\r\n<\/li>\r\n \t
                      7. Estimate the sums.\r\n
                          \r\n \t
                        1. [latex]\\begin{array}[t]{rr}&217\\\\&316\\\\+&142\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t
                        2. [latex]\\begin{array}[t]{rr}&3\\, 317\\\\&2\\, 154 \\\\+&1\\, 212\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t
                        3. [latex]\\begin{array}[t]{rr}&21\\, 016\\\\&14\\, 527 \\\\+& 51\\, 202\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t
                        4. [latex]\\begin{array}[t]{rr}&31\\, 945 \\\\&12\\, 214 \\\\+&3\\, 142\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t
                        5. [latex]\\begin{array}[t]{rr}&41\\, 730 \\\\ &2\\, 151 \\\\&33\\, 225\\\\+&14\\, 659\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n \t
                        6. [latex]\\begin{array}[t]{rr}&2\\, 173\\, 317 \\\\&3\\, 621\\, 154 \\\\+ &1\\, 421\\, 212\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\r\n<\/ol>\r\n<\/li>\r\n \t
                        7. Estimate the following answers. Be sure to round to the largest place value possible before adding. Remember to circle <\/span> the information and underline<\/span> what is being asked.\r\n
                            \r\n \t
                          1. The Plumbers\u2019 Union has 456 members. The Carpenters\u2019 Union has 875 members. The Electricians\u2019 Union has 1 394 members. Estimate how many members these three unions have.<\/li>\r\n \t
                          2. Last year Seung shipped 42169<\/span> orders from his warehouse. So far this year, Seung has shipped 5837<\/span> orders. Estimate the total number of orders sent.<\/li>\r\n \t
                          3. Avani has driven 42576<\/span> kilometres, 38342<\/span> kilometres and 14208<\/span> kilometres in the last three years. Estimate how many kilometres Avani has driven in the last three years.<\/li>\r\n<\/ol>\r\n<\/li>\r\n<\/ol>\r\n

                            Answers to Unit 2 Review<\/h1>\r\n
                              \r\n \t
                            1. \r\n
                                \r\n \t
                              1. 58<\/li>\r\n \t
                              2. 99<\/li>\r\n \t
                              3. 98<\/li>\r\n \t
                              4. 75<\/li>\r\n \t
                              5. 78<\/li>\r\n \t
                              6. 85<\/li>\r\n<\/ol>\r\n<\/li>\r\n \t
                              7. \r\n
                                  \r\n \t
                                1. 99<\/li>\r\n \t
                                2. 147<\/li>\r\n \t
                                3. 119<\/li>\r\n \t
                                4. 164<\/li>\r\n \t
                                5. 99<\/li>\r\n \t
                                6. 168<\/li>\r\n<\/ol>\r\n<\/li>\r\n \t
                                7. \r\n
                                    \r\n \t
                                  1. 988<\/li>\r\n \t
                                  2. 726<\/li>\r\n \t
                                  3. 969<\/li>\r\n \t
                                  4. 866<\/li>\r\n \t
                                  5. 763<\/li>\r\n \t
                                  6. 849<\/li>\r\n<\/ol>\r\n<\/li>\r\n \t
                                  7. \r\n
                                      \r\n \t
                                    1. 989<\/li>\r\n \t
                                    2. 969<\/li>\r\n \t
                                    3. 1388<\/span><\/li>\r\n \t
                                    4. 1299<\/span><\/li>\r\n \t
                                    5. 1498<\/span><\/li>\r\n \t
                                    6. 1189<\/span><\/li>\r\n<\/ol>\r\n<\/li>\r\n \t
                                    7. \r\n
                                        \r\n \t
                                      1. 6388<\/span><\/li>\r\n \t
                                      2. 7999<\/span><\/li>\r\n \t
                                      3. 10688<\/span><\/li>\r\n \t
                                      4. 124998<\/span><\/li>\r\n \t
                                      5. 108998<\/span><\/li>\r\n \t
                                      6. 96695<\/span><\/li>\r\n<\/ol>\r\n<\/li>\r\n \t
                                      7. \r\n
                                          \r\n \t
                                        1. 149<\/li>\r\n \t
                                        2. 887<\/li>\r\n \t
                                        3. 5577<\/span><\/li>\r\n \t
                                        4. 6799<\/span><\/li>\r\n \t
                                        5. 1099<\/span><\/li>\r\n \t
                                        6. 108778<\/span><\/li>\r\n \t
                                        7. 86878<\/span><\/li>\r\n \t
                                        8. 89678<\/span><\/li>\r\n<\/ol>\r\n<\/li>\r\n \t
                                        9. \r\n
                                            \r\n \t
                                          1. 154<\/li>\r\n \t
                                          2. 144<\/li>\r\n \t
                                          3. 124<\/li>\r\n \t
                                          4. 111<\/li>\r\n \t
                                          5. 152<\/li>\r\n \t
                                          6. 102<\/li>\r\n<\/ol>\r\n<\/li>\r\n \t
                                          7. \r\n
                                              \r\n \t
                                            1. 80<\/li>\r\n \t
                                            2. 147<\/li>\r\n \t
                                            3. 124<\/li>\r\n \t
                                            4. 127<\/li>\r\n \t
                                            5. 177<\/li>\r\n \t
                                            6. 111<\/li>\r\n<\/ol>\r\n<\/li>\r\n \t
                                            7. \r\n
                                                \r\n \t
                                              1. 846<\/li>\r\n \t
                                              2. 858<\/li>\r\n \t
                                              3. 8343<\/span><\/li>\r\n \t
                                              4. 11356<\/span><\/li>\r\n \t
                                              5. 97121<\/span><\/li>\r\n \t
                                              6. 81608<\/span><\/li>\r\n \t
                                              7. 1153<\/span><\/li>\r\n \t
                                              8. 1865<\/span><\/li>\r\n \t
                                              9. 12521<\/span><\/li>\r\n \t
                                              10. 100313<\/span><\/li>\r\n \t
                                              11. 1056<\/span>974<\/span><\/li>\r\n \t
                                              12. 62152<\/span><\/li>\r\n<\/ol>\r\n<\/li>\r\n \t
                                              13. \r\n
                                                  \r\n \t
                                                1. 1117<\/span><\/li>\r\n \t
                                                2. 578<\/li>\r\n \t
                                                3. 8379<\/span><\/li>\r\n \t
                                                4. 84612<\/span><\/li>\r\n \t
                                                5. 53966<\/span><\/li>\r\n \t
                                                6. 302626<\/span><\/li>\r\n<\/ol>\r\n<\/li>\r\n \t
                                                7. \r\n
                                                    \r\n \t
                                                  1. 200 +\u00a0 300 +\u00a0 100 = \u00a0600<\/li>\r\n \t
                                                  2. 3000<\/span> + 2000<\/span> + 1000<\/span> = 6000<\/span><\/li>\r\n \t
                                                  3. 20000<\/span>\u00a0 +\u00a0 10000<\/span>\u00a0 +\u00a0 50000<\/span> = \u00a080000<\/span><\/li>\r\n \t
                                                  4. 32000<\/span> + 12000<\/span> + 3000<\/span> = 47000<\/span><\/li>\r\n \t
                                                  5. 42000<\/span> + 2000<\/span> + 33000<\/span> + 15000<\/span> = 92000<\/span><\/li>\r\n \t
                                                  6. 2000<\/span>000<\/span> + 4000<\/span>000<\/span> + 1000<\/span>000<\/span> = 7000<\/span>000<\/span><\/li>\r\n<\/ol>\r\n<\/li>\r\n \t
                                                  7. \r\n
                                                      \r\n \t
                                                    1. 500 + 900 + 1400<\/span> = 2800<\/span> members<\/li>\r\n \t
                                                    2. 42000<\/span> + 6000<\/span> = 48000<\/span> orders<\/li>\r\n \t
                                                    3. 40000<\/span> + 40000<\/span> + 10000<\/span> = 90000<\/span> kilometres<\/li>\r\n<\/ol>\r\n<\/li>\r\n<\/ol>\r\n
                                                      \r\n\r\nCONGRATULATIONS!!\r\n\r\nNow you have finished Unit 2.\r\n\r\n \r\n\r\nTEST TIME!\r\n\r\nAsk your instructor for the Practice Test for this unit.\r\n\r\nOnce you\u2019ve done the practice test, you need to do the unit 2 test.\r\n\r\nAgain, ask your instructor for this.\r\n\r\nGood luck!\r\n\r\n<\/div>","rendered":"

                                                      You will now practice all the skills you learned in Unit 2. Check your work using the answer key at the end of the review<\/p>\n

                                                        \n
                                                      1. Find the sums.\n
                                                          \n
                                                        1. [latex]\\begin{array}[t]{rr}&23\\\\+&35\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n
                                                        2. [latex]\\begin{array}[t]{rr}&47\\\\+&52\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n
                                                        3. [latex]\\begin{array}[t]{rr}&62\\\\+&36\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n
                                                        4. [latex]\\begin{array}[t]{rr}&51\\\\+&24\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n
                                                        5. [latex]\\begin{array}[t]{rr}&64\\\\+&14\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n
                                                        6. [latex]\\begin{array}[t]{rr}&53\\\\+&32\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<\/ol>\n<\/li>\n
                                                        7. Find the sums.\n
                                                            \n
                                                          1. [latex]\\begin{array}[t]{rr}&23\\\\&34\\\\+&42\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n
                                                          2. [latex]\\begin{array}[t]{rr}&42\\\\&35\\\\+&70\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n
                                                          3. [latex]\\begin{array}[t]{rr}&41\\\\&58\\\\+&20\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n
                                                          4. [latex]\\begin{array}[t]{rr}&51\\\\&43\\\\+&70\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n
                                                          5. [latex]\\begin{array}[t]{rr}&22\\\\&46\\\\+&31\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n
                                                          6. [latex]\\begin{array}[t]{rr}&63\\\\&24\\\\+&81\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<\/ol>\n<\/li>\n
                                                          7. Find the sums.\n
                                                              \n
                                                            1. [latex]\\begin{array}[t]{rr}&518\\\\+&470\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n
                                                            2. [latex]\\begin{array}[t]{rr}&410\\\\+&316\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n
                                                            3. [latex]\\begin{array}[t]{rr}&820\\\\+&149\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n
                                                            4. [latex]\\begin{array}[t]{rr}&631\\\\+&235\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n
                                                            5. [latex]\\begin{array}[t]{rr}&240\\\\+&523\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n
                                                            6. [latex]\\begin{array}[t]{rr}&723\\\\+&126\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<\/ol>\n<\/li>\n
                                                            7. Find the sums.\n
                                                                \n
                                                              1. [latex]\\begin{array}[t]{rr}&453\\\\&216\\\\+&320\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n
                                                              2. [latex]\\begin{array}[t]{rr}&231\\\\&425\\\\+&313\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n
                                                              3. [latex]\\begin{array}[t]{rr}&212\\\\&345\\\\+&831\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n
                                                              4. [latex]\\begin{array}[t]{rr}&726\\\\&130\\\\+&443\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n
                                                              5. [latex]\\begin{array}[t]{rr}&542\\\\&315\\\\+&641\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n
                                                              6. [latex]\\begin{array}[t]{rr}&314\\\\&245\\\\+&630\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<\/ol>\n<\/li>\n
                                                              7. Find the sums.\n
                                                                  \n
                                                                1. [latex]\\begin{array}[t]{rr}&3\\, 168\\\\+& 3\\, 220\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n
                                                                2. [latex]\\begin{array}[t]{rr}&3\\, 782 \\\\+& 4 \\,217\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n
                                                                3. [latex]\\begin{array}[t]{rr}&7\\, 521 \\\\+& 3\\, 167\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n
                                                                4. [latex]\\begin{array}[t]{rr}&52\\, 163 \\\\+& 72\\, 835\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n
                                                                5. [latex]\\begin{array}[t]{rr}&54\\, 373 \\\\+& 54\\, 625\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n
                                                                6. [latex]\\begin{array}[t]{rr}&83\\, 245 \\\\+& 13\\, 450\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<\/ol>\n<\/li>\n
                                                                7. Find the sums.\n
                                                                    \n
                                                                  1. 45 + 104<\/li>\n
                                                                  2. 523 + 364<\/li>\n
                                                                  3. 5231<\/span> + 346<\/li>\n
                                                                  4. 4661<\/span> + 2138<\/span><\/li>\n
                                                                  5. 42\u00a0 +\u00a0 707\u00a0 + 350<\/li>\n
                                                                  6. 63613<\/span> + 45165<\/span><\/li>\n
                                                                  7. 22514<\/span>\u00a0 +\u00a0 43262<\/span>\u00a0 +\u00a0 21102<\/span><\/li>\n
                                                                  8. 72510<\/span> + 4127<\/span> + 13041<\/span><\/li>\n<\/ol>\n<\/li>\n
                                                                  9. Find the sums.\n
                                                                      \n
                                                                    1. [latex]\\begin{array}[t]{rr}&96\\\\+&58\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n
                                                                    2. [latex]\\begin{array}[t]{rr}&87\\\\+&57\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n
                                                                    3. [latex]\\begin{array}[t]{rr}&35\\\\+&89\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n
                                                                    4. [latex]\\begin{array}[t]{rr}&48\\\\+&63\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n
                                                                    5. [latex]\\begin{array}[t]{rr}&54\\\\+&98\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n
                                                                    6. [latex]\\begin{array}[t]{rr}&37\\\\+&65\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<\/ol>\n<\/li>\n
                                                                    7. Find the sums.\n
                                                                        \n
                                                                      1. [latex]\\begin{array}[t]{rr}&27\\\\&18\\\\+&35\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n
                                                                      2. [latex]\\begin{array}[t]{rr}&52\\\\&16\\\\+&79\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n
                                                                      3. [latex]\\begin{array}[t]{rr}&58\\\\&37\\\\+&29\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n
                                                                      4. [latex]\\begin{array}[t]{rr}&42\\\\&59\\\\+&26\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n
                                                                      5. [latex]\\begin{array}[t]{rr}&36\\\\&84\\\\+&57\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n
                                                                      6. [latex]\\begin{array}[t]{rr}&21\\\\&54\\\\+&36\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<\/ol>\n<\/li>\n
                                                                      7. Find the sums.\n
                                                                          \n
                                                                        1. [latex]\\begin{array}[t]{rr}&527\\\\+&319\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n
                                                                        2. [latex]\\begin{array}[t]{rr}&382\\\\+&476\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n
                                                                        3. [latex]\\begin{array}[t]{rr}&3\\, 782\\\\+& 4 \\,561\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n
                                                                        4. [latex]\\begin{array}[t]{rr}&6\\, 789 \\\\+& 4 \\,567\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n
                                                                        5. [latex]\\begin{array}[t]{rr}&83\\, 245 \\\\+& 13\\, 876\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n
                                                                        6. [latex]\\begin{array}[t]{rr}&52\\, 368 \\\\+& 29\\, 240\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n
                                                                        7. [latex]\\begin{array}[t]{rr}&683\\\\&194\\\\+&276\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n
                                                                        8. [latex]\\begin{array}[t]{rr}&483\\\\&629\\\\+&753\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n
                                                                        9. [latex]\\begin{array}[t]{rr}&4\\, 216 \\\\&3\\, 807 \\\\+& 4\\, 498\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n
                                                                        10. [latex]\\begin{array}[t]{rr}&11\\, 615 \\\\&12\\, 573\\\\+& 76\\, 125\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n
                                                                        11. [latex]\\begin{array}[t]{rr}&321\\, 456 \\\\&523\\, 214 \\\\+& 212\\, 304\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n
                                                                        12. [latex]\\begin{array}[t]{rr}&12\\, 421 \\\\&6\\, 815 \\\\+& 42\\, 916\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<\/ol>\n<\/li>\n
                                                                        13. Find the sums.\n
                                                                            \n
                                                                          1. 234 + 357 + 526 =<\/li>\n
                                                                          2. 435 + 16 + 127 =<\/li>\n
                                                                          3. 4118<\/span> + 2671<\/span> + 1590<\/span> =<\/li>\n
                                                                          4. 67543<\/span> + 17069<\/span> =<\/li>\n
                                                                          5. 4235<\/span> + 6815<\/span> + 42916<\/span> =<\/li>\n
                                                                          6. 231262<\/span> + 64221<\/span> + 7143<\/span> =<\/li>\n<\/ol>\n<\/li>\n
                                                                          7. Estimate the sums.\n
                                                                              \n
                                                                            1. [latex]\\begin{array}[t]{rr}&217\\\\&316\\\\+&142\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n
                                                                            2. [latex]\\begin{array}[t]{rr}&3\\, 317\\\\&2\\, 154 \\\\+&1\\, 212\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n
                                                                            3. [latex]\\begin{array}[t]{rr}&21\\, 016\\\\&14\\, 527 \\\\+& 51\\, 202\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n
                                                                            4. [latex]\\begin{array}[t]{rr}&31\\, 945 \\\\&12\\, 214 \\\\+&3\\, 142\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n
                                                                            5. [latex]\\begin{array}[t]{rr}&41\\, 730 \\\\ &2\\, 151 \\\\&33\\, 225\\\\+&14\\, 659\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n
                                                                            6. [latex]\\begin{array}[t]{rr}&2\\, 173\\, 317 \\\\&3\\, 621\\, 154 \\\\+ &1\\, 421\\, 212\\\\ \\hline \\\\ \\end{array}[\/latex]<\/li>\n<\/ol>\n<\/li>\n
                                                                            7. Estimate the following answers. Be sure to round to the largest place value possible before adding. Remember to circle <\/span> the information and underline<\/span> what is being asked.\n
                                                                                \n
                                                                              1. The Plumbers\u2019 Union has 456 members. The Carpenters\u2019 Union has 875 members. The Electricians\u2019 Union has 1 394 members. Estimate how many members these three unions have.<\/li>\n
                                                                              2. Last year Seung shipped 42169<\/span> orders from his warehouse. So far this year, Seung has shipped 5837<\/span> orders. Estimate the total number of orders sent.<\/li>\n
                                                                              3. Avani has driven 42576<\/span> kilometres, 38342<\/span> kilometres and 14208<\/span> kilometres in the last three years. Estimate how many kilometres Avani has driven in the last three years.<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n

                                                                                Answers to Unit 2 Review<\/h1>\n
                                                                                  \n
                                                                                1. \n
                                                                                    \n
                                                                                  1. 58<\/li>\n
                                                                                  2. 99<\/li>\n
                                                                                  3. 98<\/li>\n
                                                                                  4. 75<\/li>\n
                                                                                  5. 78<\/li>\n
                                                                                  6. 85<\/li>\n<\/ol>\n<\/li>\n
                                                                                  7. \n
                                                                                      \n
                                                                                    1. 99<\/li>\n
                                                                                    2. 147<\/li>\n
                                                                                    3. 119<\/li>\n
                                                                                    4. 164<\/li>\n
                                                                                    5. 99<\/li>\n
                                                                                    6. 168<\/li>\n<\/ol>\n<\/li>\n
                                                                                    7. \n
                                                                                        \n
                                                                                      1. 988<\/li>\n
                                                                                      2. 726<\/li>\n
                                                                                      3. 969<\/li>\n
                                                                                      4. 866<\/li>\n
                                                                                      5. 763<\/li>\n
                                                                                      6. 849<\/li>\n<\/ol>\n<\/li>\n
                                                                                      7. \n
                                                                                          \n
                                                                                        1. 989<\/li>\n
                                                                                        2. 969<\/li>\n
                                                                                        3. 1388<\/span><\/li>\n
                                                                                        4. 1299<\/span><\/li>\n
                                                                                        5. 1498<\/span><\/li>\n
                                                                                        6. 1189<\/span><\/li>\n<\/ol>\n<\/li>\n
                                                                                        7. \n
                                                                                            \n
                                                                                          1. 6388<\/span><\/li>\n
                                                                                          2. 7999<\/span><\/li>\n
                                                                                          3. 10688<\/span><\/li>\n
                                                                                          4. 124998<\/span><\/li>\n
                                                                                          5. 108998<\/span><\/li>\n
                                                                                          6. 96695<\/span><\/li>\n<\/ol>\n<\/li>\n
                                                                                          7. \n
                                                                                              \n
                                                                                            1. 149<\/li>\n
                                                                                            2. 887<\/li>\n
                                                                                            3. 5577<\/span><\/li>\n
                                                                                            4. 6799<\/span><\/li>\n
                                                                                            5. 1099<\/span><\/li>\n
                                                                                            6. 108778<\/span><\/li>\n
                                                                                            7. 86878<\/span><\/li>\n
                                                                                            8. 89678<\/span><\/li>\n<\/ol>\n<\/li>\n
                                                                                            9. \n
                                                                                                \n
                                                                                              1. 154<\/li>\n
                                                                                              2. 144<\/li>\n
                                                                                              3. 124<\/li>\n
                                                                                              4. 111<\/li>\n
                                                                                              5. 152<\/li>\n
                                                                                              6. 102<\/li>\n<\/ol>\n<\/li>\n
                                                                                              7. \n
                                                                                                  \n
                                                                                                1. 80<\/li>\n
                                                                                                2. 147<\/li>\n
                                                                                                3. 124<\/li>\n
                                                                                                4. 127<\/li>\n
                                                                                                5. 177<\/li>\n
                                                                                                6. 111<\/li>\n<\/ol>\n<\/li>\n
                                                                                                7. \n
                                                                                                    \n
                                                                                                  1. 846<\/li>\n
                                                                                                  2. 858<\/li>\n
                                                                                                  3. 8343<\/span><\/li>\n
                                                                                                  4. 11356<\/span><\/li>\n
                                                                                                  5. 97121<\/span><\/li>\n
                                                                                                  6. 81608<\/span><\/li>\n
                                                                                                  7. 1153<\/span><\/li>\n
                                                                                                  8. 1865<\/span><\/li>\n
                                                                                                  9. 12521<\/span><\/li>\n
                                                                                                  10. 100313<\/span><\/li>\n
                                                                                                  11. 1056<\/span>974<\/span><\/li>\n
                                                                                                  12. 62152<\/span><\/li>\n<\/ol>\n<\/li>\n
                                                                                                  13. \n
                                                                                                      \n
                                                                                                    1. 1117<\/span><\/li>\n
                                                                                                    2. 578<\/li>\n
                                                                                                    3. 8379<\/span><\/li>\n
                                                                                                    4. 84612<\/span><\/li>\n
                                                                                                    5. 53966<\/span><\/li>\n
                                                                                                    6. 302626<\/span><\/li>\n<\/ol>\n<\/li>\n
                                                                                                    7. \n
                                                                                                        \n
                                                                                                      1. 200 +\u00a0 300 +\u00a0 100 = \u00a0600<\/li>\n
                                                                                                      2. 3000<\/span> + 2000<\/span> + 1000<\/span> = 6000<\/span><\/li>\n
                                                                                                      3. 20000<\/span>\u00a0 +\u00a0 10000<\/span>\u00a0 +\u00a0 50000<\/span> = \u00a080000<\/span><\/li>\n
                                                                                                      4. 32000<\/span> + 12000<\/span> + 3000<\/span> = 47000<\/span><\/li>\n
                                                                                                      5. 42000<\/span> + 2000<\/span> + 33000<\/span> + 15000<\/span> = 92000<\/span><\/li>\n
                                                                                                      6. 2000<\/span>000<\/span> + 4000<\/span>000<\/span> + 1000<\/span>000<\/span> = 7000<\/span>000<\/span><\/li>\n<\/ol>\n<\/li>\n
                                                                                                      7. \n
                                                                                                          \n
                                                                                                        1. 500 + 900 + 1400<\/span> = 2800<\/span> members<\/li>\n
                                                                                                        2. 42000<\/span> + 6000<\/span> = 48000<\/span> orders<\/li>\n
                                                                                                        3. 40000<\/span> + 40000<\/span> + 10000<\/span> = 90000<\/span> kilometres<\/li>\n<\/ol>\n<\/li>\n<\/ol>\n
                                                                                                          \n

                                                                                                          CONGRATULATIONS!!<\/p>\n

                                                                                                          Now you have finished Unit 2.<\/p>\n

                                                                                                           <\/p>\n

                                                                                                          TEST TIME!<\/p>\n

                                                                                                          Ask your instructor for the Practice Test for this unit.<\/p>\n

                                                                                                          Once you\u2019ve done the practice test, you need to do the unit 2 test.<\/p>\n

                                                                                                          Again, ask your instructor for this.<\/p>\n

                                                                                                          Good luck!<\/p>\n<\/div>\n","protected":false},"author":90,"menu_order":4,"template":"","meta":{"pb_show_title":"on","pb_short_title":"","pb_subtitle":"","pb_authors":[],"pb_section_license":""},"chapter-type":[],"contributor":[],"license":[],"class_list":["post-57","chapter","type-chapter","status-publish","hentry"],"part":49,"_links":{"self":[{"href":"https:\/\/opentextbc.ca\/alfm2\/wp-json\/pressbooks\/v2\/chapters\/57","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":12,"href":"https:\/\/opentextbc.ca\/alfm2\/wp-json\/pressbooks\/v2\/chapters\/57\/revisions"}],"predecessor-version":[{"id":785,"href":"https:\/\/opentextbc.ca\/alfm2\/wp-json\/pressbooks\/v2\/chapters\/57\/revisions\/785"}],"part":[{"href":"https:\/\/opentextbc.ca\/alfm2\/wp-json\/pressbooks\/v2\/parts\/49"}],"metadata":[{"href":"https:\/\/opentextbc.ca\/alfm2\/wp-json\/pressbooks\/v2\/chapters\/57\/metadata\/"}],"wp:attachment":[{"href":"https:\/\/opentextbc.ca\/alfm2\/wp-json\/wp\/v2\/media?parent=57"}],"wp:term":[{"taxonomy":"chapter-type","embeddable":true,"href":"https:\/\/opentextbc.ca\/alfm2\/wp-json\/pressbooks\/v2\/chapter-type?post=57"},{"taxonomy":"contributor","embeddable":true,"href":"https:\/\/opentextbc.ca\/alfm2\/wp-json\/wp\/v2\/contributor?post=57"},{"taxonomy":"license","embeddable":true,"href":"https:\/\/opentextbc.ca\/alfm2\/wp-json\/wp\/v2\/license?post=57"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}