Estimation Worksheet
Name: ____________________Date: ____________
Instructions: Estimating sums, differences, and products by rounding and compatible numbers.
20 problems
- Estimate 86 + 79 by rounding each number to the nearest 10: ______
- Estimate 49 + 78 by rounding each number to the nearest 10: ______
- Estimate 56 + 70 by rounding each number to the nearest 10: ______
- Estimate 76 − 88 by rounding each number to the nearest 10: ______
- Estimate 67 − 33 by rounding each number to the nearest 10: ______
- Estimate 76 + 65 by rounding each number to the nearest 10: ______
- Estimate 42 − 57 by rounding each number to the nearest 10: ______
- Estimate 66 + 70 by rounding each number to the nearest 10: ______
- Estimate 58 − 42 by rounding each number to the nearest 10: ______
- Estimate 73 + 79 by rounding each number to the nearest 10: ______
- Estimate 26 + 71 by rounding each number to the nearest 10: ______
- Estimate 89 − 37 by rounding each number to the nearest 10: ______
- Estimate 81 − 72 by rounding each number to the nearest 10: ______
- Estimate 46 + 35 by rounding each number to the nearest 10: ______
- Estimate 25 + 25 by rounding each number to the nearest 10: ______
- Estimate 82 + 39 by rounding each number to the nearest 10: ______
- Estimate 31 + 40 by rounding each number to the nearest 10: ______
- Estimate 64 + 39 by rounding each number to the nearest 10: ______
- Estimate 26 − 66 by rounding each number to the nearest 10: ______
- Estimate 86 − 41 by rounding each number to the nearest 10: ______