Estimation Worksheet
Name: ____________________Date: ____________
Instructions: Estimating sums, differences, and products by rounding and compatible numbers.
20 problems
- Estimate 41 + 65 by rounding each number to the nearest 10: ______
- Estimate 21 − 65 by rounding each number to the nearest 10: ______
- Estimate 31 − 85 by rounding each number to the nearest 10: ______
- Estimate 41 − 56 by rounding each number to the nearest 10: ______
- Estimate 60 − 43 by rounding each number to the nearest 10: ______
- Estimate 48 + 88 by rounding each number to the nearest 10: ______
- Estimate 78 − 32 by rounding each number to the nearest 10: ______
- Estimate 21 + 68 by rounding each number to the nearest 10: ______
- Estimate 35 + 32 by rounding each number to the nearest 10: ______
- Estimate 61 − 26 by rounding each number to the nearest 10: ______
- Estimate 23 + 41 by rounding each number to the nearest 10: ______
- Estimate 77 + 38 by rounding each number to the nearest 10: ______
- Estimate 74 + 36 by rounding each number to the nearest 10: ______
- Estimate 79 + 48 by rounding each number to the nearest 10: ______
- Estimate 84 + 22 by rounding each number to the nearest 10: ______
- Estimate 33 + 54 by rounding each number to the nearest 10: ______
- Estimate 79 − 55 by rounding each number to the nearest 10: ______
- Estimate 21 − 27 by rounding each number to the nearest 10: ______
- Estimate 82 − 75 by rounding each number to the nearest 10: ______
- Estimate 66 + 80 by rounding each number to the nearest 10: ______