You will now practice all the skills you learned in Book 2. Check your work using the answer key at the end of the review.

If you can’t remember how to do a question, go back to the lesson on this topic to refresh your memory. The unit and topic for where each question came from is listed next to the question.

Example: 1-B means Unit 1, Topic B

1-A

1. Write the place value names (ones, tens, hundreds, thousands, ten thousands, hundred thousands, millions) for each underlined digit.
   1. 1230 – what is the place value of 2?
   2. 234965 – what is the place value of 3?
   3. 6245903 – what is the place value of 6?
   4. 62198 – what is the place value of 8?
2. Using the number 452781039, write the digit that is in each of the following place values.
   1. tens
   2. ten thousands
   3. hundred thousands
   4. millions
3. Underline the digit for the place value named.
   1. thousands 182374
   2. hundreds 1051
   3. hundred thousands 3142650
   4. thousands 21087
4. Write the word names for the numbers.
   1. 63374
   2. 7248
5. Write numerals for these word names.
   1. three million, two hundred fourteen thousand, five hundred sixty-seven
   2. fifty-one thousand, two hundred two

1-B

6. Write each number in expanded form.
   1. 3479
   2. 21016
7. Write each number from expanded form.
   1. 4000000 + 100000 + 10000 + 3000 + 200 + 40  + 8 =
   2. 100000 + 80000 + 2000 + 300 + 4  =

1-C

8. Arrange these numbers in order from smallest to largest.
   1. 312     23     2154     2514   633     43     5412
   2. 45     554     544     5454     5544     55     454     445
9. Write <, > or = in each blank as needed.
   1. 76125          71625
   2. 4325         3425
   3. 14527         14752
   4. 65234         65234

1-D

10. Round each number to the nearest 100.
    1. 672
    2. 3473
11. Round each number to the nearest 1000.
    1. 41370
    2. 64921
12. Round each number to the nearest 10 000.
    1. 76125
    2. 582412
13. Round each number to the nearest 100 000.
    1. 351257
    2. 8675247
14. Round each number to the nearest 1 000 000.
    1. 7351257
    2. 4165268
15. Word Problems.
    1. The Bering Sea is 1547 metres deep. The Caribbean Sea is 2647 metres deep. The Indian Ocean is 3963 metres deep. The Pacific Ocean is 4028 metres deep. Round each number to the nearest 100.
       

       Sea	Number	Rounded Number
       Bering Sea
       Caribbean Sea
       Indian Ocean
       Pacific Ocean

    2. The Yellow Sea has an area of 293960 square metres. The Red Sea has an area of 452990 square metres. The Black Sea has an area of 507900 square metres. Round each number to the nearest 100000.
       

       Sea	Number	Rounded Number
       Yellow Sea
       Red Sea
       Black Sea

2-A

16. Find the sums
    1. [latex]\begin{array}[t]{rr}&53\\+&24\\ \hline \\ \end{array}[/latex]
    2. [latex]\begin{array}[t]{rr}&60\\+&19\\ \hline \\ \end{array}[/latex]
    3. [latex]\begin{array}[t]{rr}&74\\+&22\\ \hline \\ \end{array}[/latex]
    4. [latex]\begin{array}[t]{rr}&21\\&45\\+&32\\ \hline \\ \end{array}[/latex]
    5. [latex]\begin{array}[t]{rr}&41\\&33\\+&24\\ \hline \\ \end{array}[/latex]
    6. [latex]\begin{array}[t]{rr}&50\\&31\\+&28\\ \hline \\ \end{array}[/latex]
17. Find the sums
    1. [latex]\begin{array}[t]{rr}&362\\&114\\+&523\\ \hline \\ \end{array}[/latex]
    2. [latex]\begin{array}[t]{rr}&425\\&241\\+&312\\ \hline \\ \end{array}[/latex]
    3. [latex]\begin{array}[t]{rr}&421\\&146\\+&332\\ \hline \\ \end{array}[/latex]
    4. [latex]\begin{array}[t]{rr}&4\, 723\\+& 4\, 165\\ \hline \\ \end{array}[/latex]
    5. [latex]\begin{array}[t]{rr}&8\, 102\\+& 2\, 562\\ \hline \\ \end{array}[/latex]
    6. [latex]\begin{array}[t]{rr}&9\, 415\\+& 3\, 521\\ \hline \\ \end{array}[/latex]
18. Find the sums.
    1. [latex]\begin{array}[t]{rr}&65\\+&423\\ \hline \\ \end{array}[/latex]
    2. [latex]\begin{array}[t]{rr}&238\\+&5\, 421\\ \hline \\ \end{array}[/latex]
    3. [latex]\begin{array}[t]{rr}&43\\&732\\+&124\\ \hline \\ \end{array}[/latex]
    4. [latex]\begin{array}[t]{rr}&8\, 216\\+& 7\, 343\\ \hline \\ \end{array}[/latex]
    5. [latex]\begin{array}[t]{rr}&75\, 236\\+&30\, 533\\ \hline \\ \end{array}[/latex]
    6. [latex]\begin{array}[t]{rr}&543\\&2\,140\\+& 67\,205\\ \hline \\ \end{array}[/latex]

2-B

19. Find the sums.
    1. [latex]\begin{array}[t]{rr}&47\\+&87 \\ \hline \\ \end{array}[/latex]
    2. [latex]\begin{array}[t]{rr}&87\\+&59 \\ \hline \\ \end{array}[/latex]
    3. [latex]\begin{array}[t]{rr}&26\\+&98 \\ \hline \\ \end{array}[/latex]
    4. [latex]\begin{array}[t]{rr}&63\\&79\\+&51 \\ \hline \\ \end{array}[/latex]
    5. [latex]\begin{array}[t]{rr}&72\\&54\\+&19 \\ \hline \\ \end{array}[/latex]
    6. [latex]\begin{array}[t]{rr}&65\\&26\\+&87 \\ \hline \\ \end{array}[/latex]
20. Find the sums.
    1. [latex]\begin{array}[t]{rr}&148\\+&996 \\ \hline \\ \end{array}[/latex]
    2. [latex]\begin{array}[t]{rr}&9\, 168\\+& 5\, 878 \\ \hline \\ \end{array}[/latex]
    3. [latex]\begin{array}[t]{rr}&78\, 945\\+& 93\, 165 \\ \hline \\ \end{array}[/latex]
    4. [latex]\begin{array}[t]{rr}&592\\&327\\+&168 \\ \hline \\ \end{array}[/latex]
    5. [latex]\begin{array}[t]{rr}&5\,534\\&1\, 684\\+&3\,719 \\ \hline \\ \end{array}[/latex]
    6. [latex]\begin{array}[t]{rr}&24\,163\\&46\, 272\\+& 61\,938 \\ \hline \\ \end{array}[/latex]
21. Find the sums.
    1. 85 + 29 + 77 =
    2. 692 + 7834 + 8096 =
    3. 43124 + 9517 =
    4. 358726 + 81297 + 3216 =

2-C

22. Estimate the sums.
    1. [latex]\begin{array}[t]{rr}&582\\&690\\+&163\\ \hline \\ \end{array}[/latex]
    2. [latex]\begin{array}[t]{rr}&1\,637\\&6\,835\\+& 3\,175\\ \hline \\ \end{array}[/latex]
    3. [latex]\begin{array}[t]{rr}&81\,904\\&54\,061\\+&15\,243\\ \hline \\ \end{array}[/latex]
    4. [latex]\begin{array}[t]{rr}&42\,563\\&4\,163\\+&6\,429\\ \hline \\ \end{array}[/latex]
23. Word Problems. Estimate the following answer. Be sure to round to the largest place value before adding.
    1. Indonesia has 7606 square kilometres of coral reef. Australia has 7299 square kilometres of coral reef. The Philippines has 3736 square kilometres of coral reef. Estimate how much coral reef there is in these three countries.

3-B

24. Find the differences.
    1. [latex]\begin{array}[t]{rr}&76\\-&35\\ \hline \\ \end{array}[/latex]
    2. [latex]\begin{array}[t]{rr}&98\\-&27\\ \hline \\ \end{array}[/latex]
    3. [latex]\begin{array}[t]{rr}&863\\-&410\\ \hline \\ \end{array}[/latex]
    4. [latex]\begin{array}[t]{rr}&1\,294\\-& 681\\ \hline \\ \end{array}[/latex]
    5. [latex]\begin{array}[t]{rr}&9\,758 \\-& 9\,421\\ \hline \\ \end{array}[/latex]
    6. [latex]\begin{array}[t]{rr}&16\,789\\-& 9\,205\\ \hline \\ \end{array}[/latex]
    7. [latex]\begin{array}[t]{rr}&48\,296\\-& 25\,134\\ \hline \\ \end{array}[/latex]
    8. [latex]\begin{array}[t]{rr}&95\,627\\-& 63\,025\\ \hline \\ \end{array}[/latex]
    9. [latex]\begin{array}[t]{rr}&145\,789\\-& 61\,425\\ \hline \\ \end{array}[/latex]
25. Rewrite each question in columns then find the differences.
    1. 569 − 421 =
    2. 7854 − 1304 =
    3. 15939 − 6714 =
    4. 86579 − 23104 =
    5. 157849 − 86531 =
    6. 136975 − 72041 =

3-D

26. Find the Differences.
    1. [latex]\begin{array}[t]{rr}&22\\-&4\\ \hline \\ \end{array}[/latex]
    2. [latex]\begin{array}[t]{rr}&43\\-&15\\ \hline \\ \end{array}[/latex]
    3. [latex]\begin{array}[t]{rr}&782\\-&43\\ \hline \\ \end{array}[/latex]
    4. [latex]\begin{array}[t]{rr}&981\\-&52\\ \hline \\ \end{array}[/latex]
    5. [latex]\begin{array}[t]{rr}&894\\-&265\\ \hline \\ \end{array}[/latex]
    6. [latex]\begin{array}[t]{rr}&943\\-&492\\ \hline \\ \end{array}[/latex]
27. Find the differences. Check your answers using addition.
    1. [latex]\begin{array}[t]{rr}&91\\-&28\\ \hline \\ \end{array}[/latex] Check:
    2. [latex]\begin{array}[t]{rr}&532\\-&240\\ \hline \\ \end{array}[/latex] Check:
    3. [latex]\begin{array}[t]{rr}&1\,751\\-& 835\\ \hline \\ \end{array}[/latex] Check:
    4. [latex]\begin{array}[t]{rr}&76\,487\\-& 5\,179\\ \hline \\ \end{array}[/latex] Check:
28. Find the differences.
    1. [latex]\begin{array}[t]{rr}&468\\-&79\\ \hline \\ \end{array}[/latex]
    2. [latex]\begin{array}[t]{rr}&752\\-&479\\ \hline \\ \end{array}[/latex]
    3. [latex]\begin{array}[t]{rr}&9\,364\\-& 580\\ \hline \\ \end{array}[/latex]
    4. [latex]\begin{array}[t]{rr}&8\,323\\-& 4\,798\\ \hline \\ \end{array}[/latex]
    5. [latex]\begin{array}[t]{rr}&52\,727\\-& 3\,748\\ \hline \\ \end{array}[/latex]
    6. [latex]\begin{array}[t]{rr}&62\, 435\\-& 17\,689\\ \hline \\ \end{array}[/latex]
29. Find the differences.
    1. [latex]\begin{array}[t]{rr}&420\\-&68\\ \hline \\ \end{array}[/latex]
    2. [latex]\begin{array}[t]{rr}&900\\-&325\\ \hline \\ \end{array}[/latex]
    3. [latex]\begin{array}[t]{rr}&3\,403\\-& 849\\ \hline \\ \end{array}[/latex]
    4. [latex]\begin{array}[t]{rr}&3\,914\\-& 1\,765\\ \hline \\ \end{array}[/latex]
    5. [latex]\begin{array}[t]{rr}&46\, 000\\-& 7\,143\\ \hline \\ \end{array}[/latex]
    6. [latex]\begin{array}[t]{rr}&53\,610\\-& 46\,929\\ \hline \\ \end{array}[/latex]
30. Rewrite each question in columns then find the difference.
    1. 973 − 178 =
    2. 5129 − 479 =
    3. 3730 − 2896 =
    4. 91220 − 78357 =

3-E

31. Estimate the differences.
    1. [latex]\begin{array}[t]{rr}&872\\-&465\\ \hline \\ \end{array}[/latex]
    2. [latex]\begin{array}[t]{rr}&6\,324\\-&389\\ \hline \\ \end{array}[/latex]
    3. [latex]\begin{array}[t]{rr}&56\, 907\\-&9\,014\\ \hline \\ \end{array}[/latex]
    4. [latex]\begin{array}[t]{rr}&64\,932\\-&6\,755\\ \hline \\ \end{array}[/latex]
32. Estimate the following answers. Be sure to round to the largest place value possible before adding or subtracting. Remember to circle the information and underline what is being asked. Check your work using the answer key at the end of the exercise.
    1. When Mrs. Wu traded in her old car, it had 72468 kilometres on the odometer. The new used car she bought had 8975 kilometres on the odometer. Estimate the difference in kilometres between her old car and her new car.
    2. Mario’s restaurant served 53058 meals last year. This year to date, the restaurant has served 5837 meals. Estimate how many more meals Mario’s restaurant served last year.

3-F

33. Word Problems. 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.
    1. The WAC Bennett Dam near Revelstoke is 2068 metres long. The Keenleyside Dam near Castlegar is 853 metres long. The Mica Dam near Revelstoke is 241 metres long. What is the total length of the three dams?
    2. Raoul earned $35668 last year. This year he has earned $42791. How much more did Raoul earn this year?
    3. During one month, Jasmine spends 12645 minutes sleeping and 5723 minutes eating. How much time does she spend sleeping and eating?
34. Find the sum or difference for each question.
    1. 273 + 538 − 54 =
    2. 2875 − 496 + 162 =
    3. 2998 + 579 − 673 =
    4. 4723 + 5806 − 3924 =
    5. Abigail earned $383 and $622 from her two jobs. She decided to keep $265 for her Christmas shopping and put the rest of the money in the bank. Estimate how much money Abigail put in the bank

4-A

35. Circle the number of coins you would need to get from the first number to the second number. Make sure to use the least number of coins you can.
    1. 70¢ to 75¢
       
    2. 80¢ to $1.00
       
    3. 50¢ to 75¢
       

4-B

36. State the number and kind of coins you would need to get from the first number to the second number. Make sure you use the least number of coins as possible.
    1. 25¢ to 50¢
    2. 70¢ to 75¢
    3. 20¢ to 75¢
37. State the number and kind of coins you would need to get change from $1.00. Make sure you use the least number of coins as possible. Check your work using the answer key at the end of the exercise.
    1. 40¢
    2. 50¢
    3. 70¢
    4. a litre of pop for 95¢
    5. an apple pastry for 60¢

4-C

38. Write the time shown on each clock.
    1. 
    2. 
    3. 
    4. 
    5. 
    6. 
39. Under each clock is a time on a digital clock. Put the hands on the analog clock to show the digital time.
    1. 
    2. 
    3. 
    4. 
    5. 
    6. 
40. Change each 12-hour clock time to 24-hour clock time. Watch carefully for a.m. and p.m. Remember: only times between 1:00 p.m. and 11:59 p.m. need to be changed.
    1. 7:32 a.m.
    2. 11:06 p.m.
    3. 2:43 p.m.
    4. 10:18 a.m.
41. Change each 12-hour clock time to 24-hour clock time. Watch carefully for a.m. and p.m. Remember: only times between 1:00 p.m. and 11:59 p.m. need to be changed.
    1. 0127
    2. 1548
    3. 0612
    4. 2053

4-D

42. Add the times.
    1. [latex]\begin{array}[t]{rr}&5\text{ h, }32\text{ min}\\ +& 4\text{ h, }21\text{ min}\\ \hline \\ \end{array}[/latex]
    2. [latex]\begin{array}[t]{rr}&3\text{ h, }27\text{ min}\\+&2\text{ h, }19\text{ min}\\ \hline \\ \end{array}[/latex]
    3. [latex]\begin{array}[t]{rr}&7\text{ h, }41\text{ min, }23\text{ s}\\ + &9\text{ h, }07\text{ min, }24\text{ s}\\ \hline \\ \end{array}[/latex]
    4. [latex]\begin{array}[t]{rr}&6\text{ h, }15\text{ min, }08\text{ s}\\ +&8\text{ h, }28\text{ min, }17\text{ s}\\ \hline \\ \end{array}[/latex]
    5. Evian took 2 h, 43 min to bake some cookies and then another 3 h, 08 min to bake and decorate a cake. How long was Evian baking?
43. subtract the times.
    1. [latex]\begin{array}[t]{rr}&5\text{ h, }53\text{ min}\\-&3\text{ h, }12\text{ min}\\ \hline \\ \end{array}[/latex]
    2. [latex]\begin{array}[t]{rr}&9\text{ h, }47\text{ min}\\- &4\text{ h, }29\text{ min}\\ \hline \\ \end{array}[/latex]
    3. [latex]\begin{array}[t]{rr}&15\text{ h, }59\text{ min, }39\text{ s}\\-&7\text{ h, }38\text{ min, }14\text{ s}\\ \hline \\ \end{array}[/latex]
    4. [latex]\begin{array}[t]{rr}&18\text{ h, }34\text{ min, }42\text{ s}\\-& 9\text{ h, }19\text{ min, }28\text{ s}\\ \hline \\ \end{array}[/latex]
    5. Elan had 4 h, 31 min to do her errands. She took 2 h, 28 min to have her hair done. How much does Elan have left to finish her errands?

4-E

44. Find the perimeter of the shape. Be sure to put the unit of measure in your answer.
    1. 
    2. 
    3. 
    4. Kono is going to put tape around a rectangular table. He has 2 500 cm of tape. The table measures 60 centimetres wide and 70 centimetres long. how much tape will he use?
    5. Charla wants to put a ribbon around the edge of a square whose side measures 112 cm. How much ribbon does she need?

Answers to Book 2 Review

1. 1. hundreds
   2. ten thousands
   3. millions
   4. ones
2. 1. 3
   2. 8
   3. 7
   4. 2
3. 1. 182374
   2. 1051
   3. 3142650
   4. 21087
4. 1. sixty-three thousand, three hundred seventy-four
   2. seven thousand, two hundred forty-eight
5. 1. 3214567
   2. 51202
6. 1. 3000 +  400  +  70 + 9
   2. 20000 + 1000 + 10 + 6
7. 1. 4133248
   2. 182304
8. 1. 23, 43, 312, 633, 2154, 2514, 5412
   2. 45, 55, 445, 454, 544, 554, 5454, 5544
9. 1. >
   2. >
   3. <
   4. =
10. 1. 700
    2. 3500
11. 1. 41000
    2. 65000
12. 1. 80000
    2. 580000
13. 1. 400000
    2. 8700000
14. 1. 7000000
    2. 4000000

15. 1. Sea	Number	Rounded Number
       Bering Sea	1547	1500
       Caribbean Sea	2647	2600
       Indian Ocean	3963	4000
       Pacific Ocean	4028	4000

    2. Sea	Number	Rounded Number
       Yellow Sea	293960	300000
       Red Sea	452990	500000
       Black Sea	507900	500000

16. 1. 77
    2. 79
    3. 96
    4. 98
    5. 98
    6. 109
17. 1. 999
    2. 978
    3. 899
    4. 8888
    5. 10664
    6. 12936
18. 1. 488
    2. 5659
    3. 899
    4. 15559
    5. 105769
    6. 69888
19. 1. 134
    2. 146
    3. 124
    4. 193
    5. 145
    6. 132373
20. 1. 1114
    2. 15046
    3. 172100
    4. 1187
    5. 10937
    6. 132373
21. 1. 191
    2. 16622
    3. 52641
    4. 443239
22. 1. 600 + 700 + 200 = 1500
    2. 2000 + 7000 + 3000 = 12000
    3. 80000 +  50000 +  20000 = 150000
    4. 43000 + 4000 + 6000 = 53000
23. 1. 8000 + 7000 + 4000 = 19000 square kilometres
24. 1. 41
    2. 71
    3. 453
    4. 613
    5. 337
    6. 7584
    7. 23162
    8. 32602
    9. 84364
25. 1. 148
    2. 6550
    3. 9225
    4. 63475
    5. 71318
    6. 64934
26. 1. 18
    2. 28
    3. 739
    4. 929
    5. 629
    6. 451
27. 1. 63, 63 +  28 =  91
    2. 292, 292 + 240 = 532
    3. 916, 916 + 835 = 1751
    4. 71208, 71308 + 5179 = 76487
28. 1. 389
    2. 273
    3. 8784
    4. 3525
    5. 48979
    6. 44746
29. 1. 352
    2. 575
    3. 2554
    4. 2149
    5. 38867
    6. 6681
30. 1. 795
    2. 4650
    3. 834
    4. 12863
31. 1. 900 − 500 = 400
    2. 6300 − 400 = 5900
    3. 57000 − 9000 = 48000
    4. 65000 − 7000 = 58000
32. 1. 70000 − 9000 = 61000 kilometres
    2. 50000 − 6000 = 4000 meals
33. 1. 3162 metres
    2. $7123
34. 1. 657
    2. 2541
    3. 2904
    4. 6605
    5. $740
35. 1. 2 pennies
    2. 1 nickel
    3. 2 dimes
    4. 1 quarter
36. 1. 1 quarter
    2. 1 nickel
    3. 1 nickel, 2 quarters
37. 1. 1 dime, 2 quarters
    2. 2 quarters
    3. 1 nickel, 1 quarter
    4. 1 dime
    5. 1 nickel, 1 dime, 1 quarter
38. 1. 7:15
    2. 3:40
    3. 11:20
    4. 10:03
    5. 4:36
    6. 9:57
39. 1. 
    2. 
    3. 
    4. 
    5. 
    6. 
40. 1. 0732
    2. 2306
    3. 1443
    4. 1018
41. 1. 1:27 p.m.
    2. 3:48 p.m.
    3. 6:12 a.m.
    4. 8:53 p.m.
42. 1. 9 h, 53 min
    2. 5 h, 46 min
    3. 16 h, 48 min, 47 s
    4. 14 h, 43 min, 25s
43. 1. 2 h, 41 min
    2. 5 h, 18 min
    3. 8 h, 21 min, 25 s
    4. 9 h, 15 min, 14 s
44. 1. 332 centimetres
    2. 46 metres
    3. 220 millimetres
    4. 260 centimetres
    5. 448 centimetres