Estimation Worksheet
Name: ____________________Date: ____________
Instructions: Estimating sums, differences, and products by rounding and compatible numbers.
20 problems
- Estimate 64 + 37 by rounding each number to the nearest 10: ______
- Estimate 40 − 27 by rounding each number to the nearest 10: ______
- Estimate 89 + 63 by rounding each number to the nearest 10: ______
- Estimate 67 − 25 by rounding each number to the nearest 10: ______
- Estimate 30 − 29 by rounding each number to the nearest 10: ______
- Estimate 64 − 22 by rounding each number to the nearest 10: ______
- Estimate 21 − 89 by rounding each number to the nearest 10: ______
- Estimate 24 + 56 by rounding each number to the nearest 10: ______
- Estimate 23 − 40 by rounding each number to the nearest 10: ______
- Estimate 47 + 33 by rounding each number to the nearest 10: ______
- Estimate 68 + 34 by rounding each number to the nearest 10: ______
- Estimate 82 + 42 by rounding each number to the nearest 10: ______
- Estimate 37 − 66 by rounding each number to the nearest 10: ______
- Estimate 65 + 29 by rounding each number to the nearest 10: ______
- Estimate 71 + 43 by rounding each number to the nearest 10: ______
- Estimate 81 − 69 by rounding each number to the nearest 10: ______
- Estimate 70 − 53 by rounding each number to the nearest 10: ______
- Estimate 88 − 24 by rounding each number to the nearest 10: ______
- Estimate 47 − 58 by rounding each number to the nearest 10: ______
- Estimate 87 + 29 by rounding each number to the nearest 10: ______