Estimation & Rounding (Grade 3) - Set A
Round numbers to estimate sums, differences, and products.
✓ Answer key checked by math, never wrong
Name: ______________________Date: ____________
Math · Grade 3
Estimation & Rounding
Round each number first, then estimate the sum, difference, or product.
- 1.Estimate 28 + 21 by rounding each to the nearest 10.
- 2.Estimate 21 + 40 by rounding each to the nearest 10.
- 3.Estimate 42 + 15 by rounding each to the nearest 10.
- 4.Estimate 75 + 62 by rounding each to the nearest 10.
- 5.Estimate 13 + 22 by rounding each to the nearest 10.
- 6.Estimate 41 + 78 by rounding each to the nearest 10.
- 7.Estimate 790 - 553 by rounding each to the nearest 100.
- 8.Estimate 620 - 478 by rounding each to the nearest 100.
- 9.Estimate 412 - 412 by rounding each to the nearest 100.
- 10.Estimate 281 - 238 by rounding each to the nearest 100.
- 11.Estimate 480 - 448 by rounding each to the nearest 100.
- 12.Estimate 15 x 74 by rounding each to the nearest 10.
- 13.Estimate 83 x 50 by rounding each to the nearest 10.
- 14.Estimate 12 x 13 by rounding each to the nearest 10.
- 15.Estimate 62 x 85 by rounding each to the nearest 10.
- 16.Estimate 34 x 32 by rounding each to the nearest 10.
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