Estimation Worksheet
Name: ____________________Date: ____________
Instructions: Estimating sums, differences, and products by rounding and compatible numbers.
20 problems
- Estimate 57 − 43 by rounding each number to the nearest 10: ______
- Estimate 69 − 89 by rounding each number to the nearest 10: ______
- Estimate 49 − 80 by rounding each number to the nearest 10: ______
- Estimate 86 + 57 by rounding each number to the nearest 10: ______
- Estimate 38 + 89 by rounding each number to the nearest 10: ______
- Estimate 66 + 81 by rounding each number to the nearest 10: ______
- Estimate 31 − 89 by rounding each number to the nearest 10: ______
- Estimate 47 + 74 by rounding each number to the nearest 10: ______
- Estimate 74 + 75 by rounding each number to the nearest 10: ______
- Estimate 36 + 63 by rounding each number to the nearest 10: ______
- Estimate 53 + 48 by rounding each number to the nearest 10: ______
- Estimate 81 − 76 by rounding each number to the nearest 10: ______
- Estimate 75 + 46 by rounding each number to the nearest 10: ______
- Estimate 70 + 58 by rounding each number to the nearest 10: ______
- Estimate 56 + 65 by rounding each number to the nearest 10: ______
- Estimate 40 + 86 by rounding each number to the nearest 10: ______
- Estimate 23 − 81 by rounding each number to the nearest 10: ______
- Estimate 85 − 82 by rounding each number to the nearest 10: ______
- Estimate 57 + 72 by rounding each number to the nearest 10: ______
- Estimate 66 + 89 by rounding each number to the nearest 10: ______