Rounding and estimating drill Worksheet Pack · Free Printable

RoundingTo the nearest 10

Name: Date:

Round each number to the nearest 10.

1616

2999

3814

4659

5242

6265

766

8929

9567

10149

11311

12732

13463

14568

15443

16846

17758

18675

19422

20768

21857

22771

2387

24357

25229

26237

2778

28669

29695

30877

RoundingTo the nearest 100

Name: Date:

Round each number to the nearest 100.

13509

29644

34282

48075

58266

61671

75111

87828

99275

105107

119076

121298

139372

144264

157881

16494

176591

183507

197742

209537

21569

222337

236189

246050

252588

267472

276655

281772

291083

302729

RoundingTo the nearest 1000

Name: Date:

Round each number to the nearest 1000.

113744

247016

370860

435858

57089

638235

763888

897053

936623

1064560

112794

1226493

1349917

147806

155951

1611087

1762482

1883429

1938537

2070292

2152442

2290050

237856

2450190

2528629

2644267

2744542

2824366

298182

3021586

EstimatingTo the nearest ten

Name: Date:

Round each number to the nearest ten, then add.

1133 + 312

2126 + 609

3119 + 411

4147 + 796

5119 + 191

6105 + 136

7112 + 224

8105 + 884

9126 + 807

10105 + 257

11119 + 488

12147 + 213

13133 + 741

14154 + 169

15133 + 444

16112 + 961

17161 + 191

18133 + 191

19154 + 939

20112 + 807

21126 + 675

22154 + 752

23126 + 345

24147 + 334

25133 + 829

26147 + 158

27133 + 334

28133 + 202

29147 + 598

30161 + 609

EstimatingTo the nearest ten

Name: Date:

Round each number to the nearest ten, then subtract.

1252 − 235

2322 − 213

3434 − 257

4427 − 279

5266 − 213

6441 − 136

7357 − 202

8238 − 158

9168 − 147

10378 − 246

11357 − 169

12413 − 334

13301 − 202

14371 − 202

15196 − 169

16315 − 169

17399 − 356

18413 − 103

19301 − 279

20392 − 103

21273 − 213

22329 − 125

23392 − 301

24434 − 411

25196 − 147

26434 − 169

27266 − 191

28322 − 257

29196 − 114

30434 − 301

EstimatingTo the nearest ten

Name: Date:

Round each number to the nearest ten, then multiply.

117 × 95

241 × 53

314 × 32

483 × 11

532 × 81

692 × 39

798 × 39

874 × 88

911 × 18

1089 × 67

1183 × 53

1286 × 11

1392 × 81

1411 × 46

1574 × 74

1614 × 95

1714 × 53

1838 × 18

1947 × 67

2023 × 18

2147 × 18

2229 × 81

2335 × 32

2426 × 81

2523 × 53

2638 × 46

2786 × 88

2829 × 39

2926 × 67

3044 × 11

Power Pack · Rounding and estimating drillAnswer key

To the nearest ten

1. 616 ≈ 6202. 999 ≈ 10003. 814 ≈ 8104. 659 ≈ 6605. 242 ≈ 2406. 265 ≈ 2707. 66 ≈ 708. 929 ≈ 9309. 567 ≈ 57010. 149 ≈ 15011. 311 ≈ 31012. 732 ≈ 73013. 463 ≈ 46014. 568 ≈ 57015. 443 ≈ 44016. 846 ≈ 85017. 758 ≈ 76018. 675 ≈ 68019. 422 ≈ 42020. 768 ≈ 77021. 857 ≈ 86022. 771 ≈ 77023. 87 ≈ 9024. 357 ≈ 36025. 229 ≈ 23026. 237 ≈ 24027. 78 ≈ 8028. 669 ≈ 67029. 695 ≈ 70030. 877 ≈ 880

To the nearest hundred

1. 3509 ≈ 35002. 9644 ≈ 96003. 4282 ≈ 43004. 8075 ≈ 81005. 8266 ≈ 83006. 1671 ≈ 17007. 5111 ≈ 51008. 7828 ≈ 78009. 9275 ≈ 930010. 5107 ≈ 510011. 9076 ≈ 910012. 1298 ≈ 130013. 9372 ≈ 940014. 4264 ≈ 430015. 7881 ≈ 790016. 494 ≈ 50017. 6591 ≈ 660018. 3507 ≈ 350019. 7742 ≈ 770020. 9537 ≈ 950021. 569 ≈ 60022. 2337 ≈ 230023. 6189 ≈ 620024. 6050 ≈ 610025. 2588 ≈ 260026. 7472 ≈ 750027. 6655 ≈ 670028. 1772 ≈ 180029. 1083 ≈ 110030. 2729 ≈ 2700

To the nearest thousand

1. 13744 ≈ 140002. 47016 ≈ 470003. 70860 ≈ 710004. 35858 ≈ 360005. 7089 ≈ 70006. 38235 ≈ 380007. 63888 ≈ 640008. 97053 ≈ 970009. 36623 ≈ 3700010. 64560 ≈ 6500011. 2794 ≈ 300012. 26493 ≈ 2600013. 49917 ≈ 5000014. 7806 ≈ 800015. 5951 ≈ 600016. 11087 ≈ 1100017. 62482 ≈ 6200018. 83429 ≈ 8300019. 38537 ≈ 3900020. 70292 ≈ 7000021. 52442 ≈ 5200022. 90050 ≈ 9000023. 7856 ≈ 800024. 50190 ≈ 50000

Power Pack · Rounding and estimating drillAnswer key

To the nearest thousand

25. 28629 ≈ 2900026. 44267 ≈ 4400027. 44542 ≈ 4500028. 24366 ≈ 2400029. 8182 ≈ 800030. 21586 ≈ 22000

Estimating sums

1. 133 + 312 ≈ 130 + 310 = 4402. 126 + 609 ≈ 130 + 610 = 7403. 119 + 411 ≈ 120 + 410 = 5304. 147 + 796 ≈ 150 + 800 = 9505. 119 + 191 ≈ 120 + 190 = 3106. 105 + 136 ≈ 110 + 140 = 2507. 112 + 224 ≈ 110 + 220 = 3308. 105 + 884 ≈ 110 + 880 = 9909. 126 + 807 ≈ 130 + 810 = 94010. 105 + 257 ≈ 110 + 260 = 37011. 119 + 488 ≈ 120 + 490 = 61012. 147 + 213 ≈ 150 + 210 = 36013. 133 + 741 ≈ 130 + 740 = 87014. 154 + 169 ≈ 150 + 170 = 32015. 133 + 444 ≈ 130 + 440 = 57016. 112 + 961 ≈ 110 + 960 = 107017. 161 + 191 ≈ 160 + 190 = 35018. 133 + 191 ≈ 130 + 190 = 32019. 154 + 939 ≈ 150 + 940 = 109020. 112 + 807 ≈ 110 + 810 = 92021. 126 + 675 ≈ 130 + 680 = 81022. 154 + 752 ≈ 150 + 750 = 90023. 126 + 345 ≈ 130 + 350 = 48024. 147 + 334 ≈ 150 + 330 = 48025. 133 + 829 ≈ 130 + 830 = 96026. 147 + 158 ≈ 150 + 160 = 31027. 133 + 334 ≈ 130 + 330 = 46028. 133 + 202 ≈ 130 + 200 = 33029. 147 + 598 ≈ 150 + 600 = 75030. 161 + 609 ≈ 160 + 610 = 770

Estimating differences

1. 252 − 235 ≈ 250 − 240 = 102. 322 − 213 ≈ 320 − 210 = 1103. 434 − 257 ≈ 430 − 260 = 1704. 427 − 279 ≈ 430 − 280 = 1505. 266 − 213 ≈ 270 − 210 = 606. 441 − 136 ≈ 440 − 140 = 3007. 357 − 202 ≈ 360 − 200 = 1608. 238 − 158 ≈ 240 − 160 = 809. 168 − 147 ≈ 170 − 150 = 2010. 378 − 246 ≈ 380 − 250 = 13011. 357 − 169 ≈ 360 − 170 = 19012. 413 − 334 ≈ 410 − 330 = 8013. 301 − 202 ≈ 300 − 200 = 10014. 371 − 202 ≈ 370 − 200 = 17015. 196 − 169 ≈ 200 − 170 = 3016. 315 − 169 ≈ 320 − 170 = 150

Power Pack · Rounding and estimating drillAnswer key

Estimating differences

17. 399 − 356 ≈ 400 − 360 = 4018. 413 − 103 ≈ 410 − 100 = 31019. 301 − 279 ≈ 300 − 280 = 2020. 392 − 103 ≈ 390 − 100 = 29021. 273 − 213 ≈ 270 − 210 = 6022. 329 − 125 ≈ 330 − 130 = 20023. 392 − 301 ≈ 390 − 300 = 9024. 434 − 411 ≈ 430 − 410 = 2025. 196 − 147 ≈ 200 − 150 = 5026. 434 − 169 ≈ 430 − 170 = 26027. 266 − 191 ≈ 270 − 190 = 8028. 322 − 257 ≈ 320 − 260 = 6029. 196 − 114 ≈ 200 − 110 = 9030. 434 − 301 ≈ 430 − 300 = 130

Estimating products

1. 17 × 95 ≈ 20 × 100 = 20002. 41 × 53 ≈ 40 × 50 = 20003. 14 × 32 ≈ 10 × 30 = 3004. 83 × 11 ≈ 80 × 10 = 8005. 32 × 81 ≈ 30 × 80 = 24006. 92 × 39 ≈ 90 × 40 = 36007. 98 × 39 ≈ 100 × 40 = 40008. 74 × 88 ≈ 70 × 90 = 63009. 11 × 18 ≈ 10 × 20 = 20010. 89 × 67 ≈ 90 × 70 = 630011. 83 × 53 ≈ 80 × 50 = 400012. 86 × 11 ≈ 90 × 10 = 90013. 92 × 81 ≈ 90 × 80 = 720014. 11 × 46 ≈ 10 × 50 = 50015. 74 × 74 ≈ 70 × 70 = 490016. 14 × 95 ≈ 10 × 100 = 100017. 14 × 53 ≈ 10 × 50 = 50018. 38 × 18 ≈ 40 × 20 = 80019. 47 × 67 ≈ 50 × 70 = 350020. 23 × 18 ≈ 20 × 20 = 40021. 47 × 18 ≈ 50 × 20 = 100022. 29 × 81 ≈ 30 × 80 = 240023. 35 × 32 ≈ 40 × 30 = 120024. 26 × 81 ≈ 30 × 80 = 240025. 23 × 53 ≈ 20 × 50 = 100026. 38 × 46 ≈ 40 × 50 = 200027. 86 × 88 ≈ 90 × 90 = 810028. 29 × 39 ≈ 30 × 40 = 120029. 26 × 67 ≈ 30 × 70 = 210030. 44 × 11 ≈ 40 × 10 = 400

Rounding and estimating drill

What is in the pack

The fluency track

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