Place value, rounding and estimating

Reading a number's places, rounding it, and using the rounded one to estimate — three steps of the same habit.

5 sheets · 60 questions · one answer key · 6 pages

Recommended for grades 2–3

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Value of a digit Sheet 1 of 5

Place value3-digit numbers

Name: Date:

Write what the underlined digit is worth.

1994

2805

3107

4502

5598

6504

7226

8557

9407

10394

11447

12909

Place value3-digit numbers

Name: Date:

Write each number in expanded form.

1952 =

2708 =

3809 =

4177 =

5123 =

6300 =

7109 =

8703 =

9258 =

10584 =

11461 =

12901 =

RoundingTo the nearest 10

Name: Date:

Round each number to the nearest 10.

1242

2765

3542

4343

5895

6445

7197

8504

9171

10903

11286

12583

EstimatingTo the nearest ten

Name: Date:

Round each number to the nearest ten, then add.

1154 + 653

2154 + 829

3133 + 202

4105 + 279

5126 + 686

6126 + 246

7147 + 323

8112 + 389

9119 + 499

10161 + 103

11112 + 851

12147 + 961

EstimatingTo the nearest ten

Name: Date:

Round each number to the nearest ten, then multiply.

126 × 32

244 × 11

323 × 74

486 × 95

574 × 18

686 × 25

786 × 18

853 × 11

947 × 18

1065 × 11

1153 × 81

1286 × 74

Power Pack · Place value, rounding and estimatingAnswer key

Value of a digit

1. 994 (9) → 9002. 805 (8) → 8003. 107 (1) → 1004. 502 (2) → 25. 598 (5) → 5006. 504 (4) → 47. 226 (6) → 68. 557 (7) → 79. 407 (7) → 710. 394 (9) → 9011. 447 (4) → 4012. 909 (9) → 900

Expanded form

1. 952 = 900 + 50 + 22. 708 = 700 + 83. 809 = 800 + 94. 177 = 100 + 70 + 75. 123 = 100 + 20 + 36. 300 = 3007. 109 = 100 + 98. 703 = 700 + 39. 258 = 200 + 50 + 810. 584 = 500 + 80 + 411. 461 = 400 + 60 + 112. 901 = 900 + 1

Rounding

1. 242 ≈ 2402. 765 ≈ 7703. 542 ≈ 5404. 343 ≈ 3405. 895 ≈ 9006. 445 ≈ 4507. 197 ≈ 2008. 504 ≈ 5009. 171 ≈ 17010. 903 ≈ 90011. 286 ≈ 29012. 583 ≈ 580

Estimating sums

1. 154 + 653 ≈ 150 + 650 = 8002. 154 + 829 ≈ 150 + 830 = 9803. 133 + 202 ≈ 130 + 200 = 3304. 105 + 279 ≈ 110 + 280 = 3905. 126 + 686 ≈ 130 + 690 = 8206. 126 + 246 ≈ 130 + 250 = 3807. 147 + 323 ≈ 150 + 320 = 4708. 112 + 389 ≈ 110 + 390 = 5009. 119 + 499 ≈ 120 + 500 = 62010. 161 + 103 ≈ 160 + 100 = 26011. 112 + 851 ≈ 110 + 850 = 96012. 147 + 961 ≈ 150 + 960 = 1110

Estimating products

1. 26 × 32 ≈ 30 × 30 = 9002. 44 × 11 ≈ 40 × 10 = 4003. 23 × 74 ≈ 20 × 70 = 14004. 86 × 95 ≈ 90 × 100 = 90005. 74 × 18 ≈ 70 × 20 = 14006. 86 × 25 ≈ 90 × 30 = 27007. 86 × 18 ≈ 90 × 20 = 18008. 53 × 11 ≈ 50 × 10 = 5009. 47 × 18 ≈ 50 × 20 = 100010. 65 × 11 ≈ 70 × 10 = 70011. 53 × 81 ≈ 50 × 80 = 400012. 86 × 74 ≈ 90 × 70 = 6300

Place value, rounding and estimating

What is in the pack

The number track

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