Estimation Worksheet
Name: ____________________Date: ____________
Instructions: Estimating sums, differences, and products by rounding and compatible numbers.
20 problems
- Estimate 57 − 86 by rounding each number to the nearest 10: ______
- Estimate 27 − 73 by rounding each number to the nearest 10: ______
- Estimate 56 − 83 by rounding each number to the nearest 10: ______
- Estimate 80 + 21 by rounding each number to the nearest 10: ______
- Estimate 45 − 86 by rounding each number to the nearest 10: ______
- Estimate 31 − 58 by rounding each number to the nearest 10: ______
- Estimate 61 − 87 by rounding each number to the nearest 10: ______
- Estimate 60 + 79 by rounding each number to the nearest 10: ______
- Estimate 82 + 64 by rounding each number to the nearest 10: ______
- Estimate 73 + 83 by rounding each number to the nearest 10: ______
- Estimate 82 + 71 by rounding each number to the nearest 10: ______
- Estimate 85 − 30 by rounding each number to the nearest 10: ______
- Estimate 59 + 28 by rounding each number to the nearest 10: ______
- Estimate 40 + 23 by rounding each number to the nearest 10: ______
- Estimate 75 − 66 by rounding each number to the nearest 10: ______
- Estimate 28 − 75 by rounding each number to the nearest 10: ______
- Estimate 88 + 71 by rounding each number to the nearest 10: ______
- Estimate 22 + 59 by rounding each number to the nearest 10: ______
- Estimate 39 − 77 by rounding each number to the nearest 10: ______
- Estimate 37 + 74 by rounding each number to the nearest 10: ______