Estimation Worksheet
Name: ____________________Date: ____________
Instructions: Estimating sums, differences, and products by rounding and compatible numbers.
20 problems
- Estimate 86 + 81 by rounding each number to the nearest 10: ______
- Estimate 21 + 82 by rounding each number to the nearest 10: ______
- Estimate 24 + 56 by rounding each number to the nearest 10: ______
- Estimate 56 − 41 by rounding each number to the nearest 10: ______
- Estimate 45 + 23 by rounding each number to the nearest 10: ______
- Estimate 44 + 27 by rounding each number to the nearest 10: ______
- Estimate 50 − 82 by rounding each number to the nearest 10: ______
- Estimate 23 − 86 by rounding each number to the nearest 10: ______
- Estimate 52 + 66 by rounding each number to the nearest 10: ______
- Estimate 77 + 60 by rounding each number to the nearest 10: ______
- Estimate 65 + 39 by rounding each number to the nearest 10: ______
- Estimate 42 + 38 by rounding each number to the nearest 10: ______
- Estimate 82 − 88 by rounding each number to the nearest 10: ______
- Estimate 66 − 25 by rounding each number to the nearest 10: ______
- Estimate 68 − 63 by rounding each number to the nearest 10: ______
- Estimate 89 − 55 by rounding each number to the nearest 10: ______
- Estimate 60 − 77 by rounding each number to the nearest 10: ______
- Estimate 33 − 22 by rounding each number to the nearest 10: ______
- Estimate 29 − 81 by rounding each number to the nearest 10: ______
- Estimate 84 − 36 by rounding each number to the nearest 10: ______