Estimation Worksheet
Name: ____________________Date: ____________
Instructions: Estimating sums, differences, and products by rounding and compatible numbers.
20 problems
- Estimate 77 − 65 by rounding each number to the nearest 10: ______
- Estimate 49 − 81 by rounding each number to the nearest 10: ______
- Estimate 87 + 63 by rounding each number to the nearest 10: ______
- Estimate 50 + 72 by rounding each number to the nearest 10: ______
- Estimate 89 + 81 by rounding each number to the nearest 10: ______
- Estimate 72 − 64 by rounding each number to the nearest 10: ______
- Estimate 71 + 51 by rounding each number to the nearest 10: ______
- Estimate 57 + 58 by rounding each number to the nearest 10: ______
- Estimate 67 − 74 by rounding each number to the nearest 10: ______
- Estimate 23 + 28 by rounding each number to the nearest 10: ______
- Estimate 44 + 25 by rounding each number to the nearest 10: ______
- Estimate 83 + 40 by rounding each number to the nearest 10: ______
- Estimate 44 + 48 by rounding each number to the nearest 10: ______
- Estimate 76 − 45 by rounding each number to the nearest 10: ______
- Estimate 43 − 70 by rounding each number to the nearest 10: ______
- Estimate 76 + 59 by rounding each number to the nearest 10: ______
- Estimate 31 + 83 by rounding each number to the nearest 10: ______
- Estimate 77 + 86 by rounding each number to the nearest 10: ______
- Estimate 64 + 31 by rounding each number to the nearest 10: ______
- Estimate 26 − 86 by rounding each number to the nearest 10: ______