Estimation Worksheet
Name: ____________________Date: ____________
Instructions: Estimating sums, differences, and products by rounding and compatible numbers.
20 problems
- Estimate 23 − 81 by rounding each number to the nearest 10: ______
- Estimate 79 + 37 by rounding each number to the nearest 10: ______
- Estimate 78 − 61 by rounding each number to the nearest 10: ______
- Estimate 43 − 88 by rounding each number to the nearest 10: ______
- Estimate 66 + 50 by rounding each number to the nearest 10: ______
- Estimate 29 − 46 by rounding each number to the nearest 10: ______
- Estimate 32 + 22 by rounding each number to the nearest 10: ______
- Estimate 29 + 25 by rounding each number to the nearest 10: ______
- Estimate 79 − 58 by rounding each number to the nearest 10: ______
- Estimate 57 − 54 by rounding each number to the nearest 10: ______
- Estimate 85 + 53 by rounding each number to the nearest 10: ______
- Estimate 82 + 65 by rounding each number to the nearest 10: ______
- Estimate 52 − 88 by rounding each number to the nearest 10: ______
- Estimate 88 + 79 by rounding each number to the nearest 10: ______
- Estimate 84 − 53 by rounding each number to the nearest 10: ______
- Estimate 68 + 45 by rounding each number to the nearest 10: ______
- Estimate 33 + 55 by rounding each number to the nearest 10: ______
- Estimate 33 − 23 by rounding each number to the nearest 10: ______
- Estimate 31 − 32 by rounding each number to the nearest 10: ______
- Estimate 57 − 53 by rounding each number to the nearest 10: ______