Estimation Worksheet
Name: ____________________Date: ____________
Instructions: Estimating sums, differences, and products by rounding and compatible numbers.
20 problems
- Estimate 88 + 30 by rounding each number to the nearest 10: ______
- Estimate 21 − 22 by rounding each number to the nearest 10: ______
- Estimate 81 + 39 by rounding each number to the nearest 10: ______
- Estimate 78 + 62 by rounding each number to the nearest 10: ______
- Estimate 88 − 59 by rounding each number to the nearest 10: ______
- Estimate 86 − 71 by rounding each number to the nearest 10: ______
- Estimate 81 − 64 by rounding each number to the nearest 10: ______
- Estimate 31 − 56 by rounding each number to the nearest 10: ______
- Estimate 39 − 21 by rounding each number to the nearest 10: ______
- Estimate 78 − 69 by rounding each number to the nearest 10: ______
- Estimate 25 − 49 by rounding each number to the nearest 10: ______
- Estimate 45 + 38 by rounding each number to the nearest 10: ______
- Estimate 23 + 64 by rounding each number to the nearest 10: ______
- Estimate 79 + 29 by rounding each number to the nearest 10: ______
- Estimate 39 + 48 by rounding each number to the nearest 10: ______
- Estimate 59 − 45 by rounding each number to the nearest 10: ______
- Estimate 50 + 60 by rounding each number to the nearest 10: ______
- Estimate 30 − 83 by rounding each number to the nearest 10: ______
- Estimate 69 + 86 by rounding each number to the nearest 10: ______
- Estimate 67 + 83 by rounding each number to the nearest 10: ______