Math Workbook - Grade 7

67 Pages·2004·0.842 MB·English

by  Beverly Nance

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MILLIKEN PUBLISHING COMPANY (cid:127)
7
Math
WORKBOOK
Finally, a new workbook for seventh grade math!
Basic skills are reviewed and expanded as students work through 58
pages of activities. Each page gives an example and step–by–step
solution of the problem presented. Some of the many skills covered
include a review of addition, subtraction, multiplication, and division,
plus challenges in decimal fractions, exponential and scientific
Author
notation, primes, probability, percents, and basic geometric principles.
Beverly Nance
Six answer pages are provided.
Project Manager
E. Rohne Rudder
Typesetting
Pagecrafters, Inc.
Cover Art
E. Rohne Rudder
Managing Editor
Kathleen Hilmes
Copyright ©1993 The purchase of this book entitles the individual purchaser to reproduce
Milliken Publishing Company copies by duplicating master or by any photocopy process for single class-
room use. The reproduction of any part of this book for commercial resale or
for use by an entire school or school system is strictly prohibited. Storage of
All rights reserved. any part of this book in any type of electronic retrieval system is prohibited
unless purchaser receives written authorization from the publisher.
Find each sum.
Addition (three and four-digit addends)
425 + 325 + 550 =
3 20 + 1450 + 230 = 2000

150 + 200 + 425 =
1749
325 + 450 + 175 = 281
362
+ 4567
1250 + 375 + 250 =
6959
310 + 420 + 1270 =
2550 + 320 + 430 = 3450 + 1250 + 375 =
8220 + 1210 + 970 = 1230 + 450 + 6720 =
275 + 450 + 1275 = 1315 + 1485 + 250 =
150 + 250 + 3450 = 9150 + 450 + 370 =

8 240 + 3510 + 450 = 1 235 + 1215 + 150 =
546 3456 5678 248 259
892 123 5687 652 1231
+ 352 + 4567 + 5692 + 632 + 5678
1234 2468 247 9999 1111
5678 1357 1359 8888 3333
+ 9018 + 1234 + 9994 + 7777 + 7777
6008 2080 5550 1991 1357
002 424 5050 2882 8023
+ 5005 + 6586 + 5005 + 3773 + 4690

© Milliken Publishing Company 1 MP4054
Find each difference (mentally).
Subtraction of large numbers
658 − 236 =
299 712
3000 831
892 − 451 =
− 1235 − 258

1765 573
750 − 240 =
685 − 455 =
cancelling and carrying
899 − 377 =
8246 − 3123 = 5489 − 3157 =
9876 − 5432 = 8240 − 6130 =
6812 − 4701 = 8613 − 8002 =
6425 − 5314 = 8249 − 1111 =

8 048 − 6040 = 9 753 − 8642 =
Find each difference.
8000 6782 3451 2561 3040
− 4567 − 4998 − 2506 − 2489 − 1826
5043 3424 1234 8405 6500
− 2879 − 1567 − 456 − 2600 − 4305
6000 4200 1050 5060 7329
− 1358 − 2845 − 879 − 4699 − 5638

© Milliken Publishing Company 2 MP4054
Find each product (mentally).
Mental Multiplication
2 × 100 × 8 = 4 × 100 × 6 = 2400

7 00 × 8 = 5600
6 × 100 × 5 =
One, two, and three-digit multipliers
7 × 1000 × 8 = 875 123 5603
× 3 × 14 × 50

12 × 1000 × 3 = 2625 492 0000
123 28015

20 × 1000 × 6 = 1722 280,150
30 × 1000 × 8 = 5 × 1000 × 40 =
15 × 1000 × 20 = 3 × 1000 × 30 =
3 × 2000 × 4 = 6 × 2000 × 3 =
5 × 3000 × 2 = 7 × 4000 × 10 =

9 × 800 × 100 = 8 × 200 × 1000 =
Find each product.
305 468 581 689 892
× 2 × 3 × 5 × 7 × 9
560 321 602 842 678
× 25 × 14 × 81 × 45 × 66
321 562 890 689 425
× 123 × 421 × 405 × 157 × 125

© Milliken Publishing Company 3 MP4054
Mental Division
Find each quotient (mentally).
1600 ÷ 40 = 40
2500 ÷ 5 =
9 000 ÷ 300 = 30
Quotients with remainders
3600 ÷ 60 =
311 R7
)
15 4672
900 ÷ 10 =
45
17
800 ÷ 20 = 15
22
350 ÷ 70 = 15

7
2800 ÷ 40 = 8100 ÷ 90 =
24,000 ÷ 600 = 3200 ÷ 800 =
4200 ÷ 70 = 7200 ÷ 80 =
15,000 ÷ 500 = 60,000 ÷ 2000 =

1 8,000 ÷ 100 = 2 1,000 ÷ 300 =
Find each quotient with remainder.
) ) )
4 2407 5 3716 8 1245
) ) )
9 1049 24 3641 35 2458
) ) )
9 1 9289 85 6541 135 12569

© Milliken Publishing Company 4 MP4054
Write > or < in each .
Comparing whole numbers
2048 1468
468 and 480 5005 and 4998

288 301 4 68 < 480 5005 > 4998
Ordering from least to greatest
900,506 888,968
205, 285, 302, 216
64,506 8999 205 < 216 < 285 < 302
304,582 4,567,123
304,562 304,056 66,725 66,275
456,008 456,800 77,125 71,555
120,046 88,765 105,065 700,000
212,131 221,313 561,165 651,561

236,468 236,486 490,555 501,124
Put numbers in order from least to greatest.
502; 243; 462; 512 :
121; 108; 118; 111 :
865; 1000; 859; 721 :
645; 654; 651; 660 :
909; 919; 990; 900 :
532; 512; 522; 502 :
789; 795; 703; 765 :
5835; 5136; 5842 :
1004; 1100; 1010 :
4586; 4856; 4658 :
© Milliken Publishing Company 5 MP4054
Round to the nearest 10.
Rounding to the nearest 10
182 → 4637 → 4640
Rounding to the nearest 100
857 →
4637 → 4600
763 → Rounding to the nearest 1000

4 637 → 5000
456 →

1451 →
Round to the nearest 100.
742 8042 7345 6190 995
123 568 1491 9999 4111
Round to the nearest 1000.
1258 6499 5671 1085 5555
8008 2944 3299 5712 3511
Round to the nearest ten thousand.
42,564 34,985 15,432
66,543 10,499 28,009
33,456 78,451
Round to the nearest million.
1,456,784 3,842,165 5,064,301
1,742,500 245,671,234
© Milliken Publishing Company 6 MP4054
Estimate each sum.
Estimate by rounding:
26 + 39 =
67 + 21 ≈ 70 + 20 = 90
89 + 33 =
142 − 28 ≈ 140 − 30 = 110
41 + 51 =
28 + 32 =
57 + 68 =
129 + 139 = 899 + 642 =
751 + 849 = 292 + 353 =
439 + 521 = 728 + 862 =
1452 + 3123 = 2598 + 3788 =
8670 + 167 = 385 + 4621 =
Estimate each difference.
89 − 41 = 62 − 29 = 48 − 22 =
31 − 19 = 56 − 28 = 77 − 43 =
128 − 21 = 267 − 149 = 508 − 409 =
485 − 68 = 721 − 139 = 241 − 189 =
Estimate total by rounding to the nearest 10.
89 − 42 + 56 − 37 + 48 + 77 − 21 =
126 − 19 + 459 − 68 + 46 + 37 − 24 =
© Milliken Publishing Company 7 MP4054
Estimate each product.
Estimate by rounding to 1-digit accuracy:
895 × 39 =
691 → 700
709 × 21 = × 49 → × 50
35,000
267 × 34 =
2187 ÷ 54 → 2000 ÷ 50 ≈ 40
542 × 58 =
89 × 99 =
409 × 59 = 372 × 19 =
159 × 96 = 612 × 28 =
975 × 18 = 478 × 39 =
816 × 57 = 786 × 87 =
892 × 199 = 686 × 308 =
Estimate each quotient.
3946 ÷ 49 = 6047 ÷ 18 =
369 ÷ 38 = 539 ÷ 87 =
238 ÷ 79 = 179 ÷ 59 =
4783 ÷ 49 = 7781 ÷ 371 =
8742 ÷ 268 = 1950 ÷ 190 =
2736 ÷ 289 = 3647 ÷ 187 =
5882 ÷ 291 = 6199 ÷ 307 =
395 × (621 ÷ 197) =
© Milliken Publishing Company 8 MP4054