Estimation Worksheet
Name: ____________________Date: ____________
Instructions: Estimating sums, differences, and products by rounding and compatible numbers.
20 problems
- Estimate 28 − 31 by rounding each number to the nearest 10: ______
- Estimate 40 − 84 by rounding each number to the nearest 10: ______
- Estimate 34 + 38 by rounding each number to the nearest 10: ______
- Estimate 70 + 65 by rounding each number to the nearest 10: ______
- Estimate 45 + 82 by rounding each number to the nearest 10: ______
- Estimate 80 + 77 by rounding each number to the nearest 10: ______
- Estimate 78 + 80 by rounding each number to the nearest 10: ______
- Estimate 44 − 41 by rounding each number to the nearest 10: ______
- Estimate 52 − 27 by rounding each number to the nearest 10: ______
- Estimate 72 + 25 by rounding each number to the nearest 10: ______
- Estimate 23 − 22 by rounding each number to the nearest 10: ______
- Estimate 58 − 34 by rounding each number to the nearest 10: ______
- Estimate 85 − 32 by rounding each number to the nearest 10: ______
- Estimate 60 + 66 by rounding each number to the nearest 10: ______
- Estimate 24 + 69 by rounding each number to the nearest 10: ______
- Estimate 36 − 81 by rounding each number to the nearest 10: ______
- Estimate 85 − 52 by rounding each number to the nearest 10: ______
- Estimate 57 − 25 by rounding each number to the nearest 10: ______
- Estimate 74 − 33 by rounding each number to the nearest 10: ______
- Estimate 25 + 27 by rounding each number to the nearest 10: ______