Estimation Worksheet
Name: ____________________Date: ____________
Instructions: Estimating sums, differences, and products by rounding and compatible numbers.
20 problems
- Estimate 49 − 48 by rounding each number to the nearest 10: ______
- Estimate 48 + 28 by rounding each number to the nearest 10: ______
- Estimate 49 − 47 by rounding each number to the nearest 10: ______
- Estimate 42 − 72 by rounding each number to the nearest 10: ______
- Estimate 68 + 63 by rounding each number to the nearest 10: ______
- Estimate 81 − 87 by rounding each number to the nearest 10: ______
- Estimate 81 + 24 by rounding each number to the nearest 10: ______
- Estimate 82 − 58 by rounding each number to the nearest 10: ______
- Estimate 52 + 25 by rounding each number to the nearest 10: ______
- Estimate 24 − 31 by rounding each number to the nearest 10: ______
- Estimate 53 − 69 by rounding each number to the nearest 10: ______
- Estimate 82 − 57 by rounding each number to the nearest 10: ______
- Estimate 62 − 47 by rounding each number to the nearest 10: ______
- Estimate 84 − 21 by rounding each number to the nearest 10: ______
- Estimate 50 + 70 by rounding each number to the nearest 10: ______
- Estimate 25 − 69 by rounding each number to the nearest 10: ______
- Estimate 83 − 71 by rounding each number to the nearest 10: ______
- Estimate 22 + 80 by rounding each number to the nearest 10: ______
- Estimate 42 + 33 by rounding each number to the nearest 10: ______
- Estimate 78 − 77 by rounding each number to the nearest 10: ______