Estimation Worksheet
Name: ____________________Date: ____________
Instructions: Estimating sums, differences, and products by rounding and compatible numbers.
20 problems
- Estimate 78 + 52 by rounding each number to the nearest 10: ______
- Estimate 56 + 30 by rounding each number to the nearest 10: ______
- Estimate 85 − 49 by rounding each number to the nearest 10: ______
- Estimate 72 − 24 by rounding each number to the nearest 10: ______
- Estimate 57 − 82 by rounding each number to the nearest 10: ______
- Estimate 67 − 89 by rounding each number to the nearest 10: ______
- Estimate 61 + 38 by rounding each number to the nearest 10: ______
- Estimate 41 + 35 by rounding each number to the nearest 10: ______
- Estimate 46 − 26 by rounding each number to the nearest 10: ______
- Estimate 66 + 22 by rounding each number to the nearest 10: ______
- Estimate 21 + 87 by rounding each number to the nearest 10: ______
- Estimate 49 − 29 by rounding each number to the nearest 10: ______
- Estimate 65 + 46 by rounding each number to the nearest 10: ______
- Estimate 37 + 86 by rounding each number to the nearest 10: ______
- Estimate 81 + 49 by rounding each number to the nearest 10: ______
- Estimate 38 − 61 by rounding each number to the nearest 10: ______
- Estimate 72 − 63 by rounding each number to the nearest 10: ______
- Estimate 22 + 86 by rounding each number to the nearest 10: ______
- Estimate 41 + 59 by rounding each number to the nearest 10: ______
- Estimate 49 + 88 by rounding each number to the nearest 10: ______