Estimation Worksheet
Name: ____________________Date: ____________
Instructions: Estimating sums, differences, and products by rounding and compatible numbers.
20 problems
- Estimate 26 + 28 by rounding each number to the nearest 10: ______
- Estimate 24 − 61 by rounding each number to the nearest 10: ______
- Estimate 82 − 42 by rounding each number to the nearest 10: ______
- Estimate 35 − 68 by rounding each number to the nearest 10: ______
- Estimate 60 + 21 by rounding each number to the nearest 10: ______
- Estimate 54 − 63 by rounding each number to the nearest 10: ______
- Estimate 43 + 81 by rounding each number to the nearest 10: ______
- Estimate 70 − 22 by rounding each number to the nearest 10: ______
- Estimate 79 − 49 by rounding each number to the nearest 10: ______
- Estimate 74 − 60 by rounding each number to the nearest 10: ______
- Estimate 47 − 63 by rounding each number to the nearest 10: ______
- Estimate 44 − 27 by rounding each number to the nearest 10: ______
- Estimate 29 − 28 by rounding each number to the nearest 10: ______
- Estimate 55 − 22 by rounding each number to the nearest 10: ______
- Estimate 42 + 72 by rounding each number to the nearest 10: ______
- Estimate 80 − 62 by rounding each number to the nearest 10: ______
- Estimate 40 + 29 by rounding each number to the nearest 10: ______
- Estimate 82 − 33 by rounding each number to the nearest 10: ______
- Estimate 86 + 21 by rounding each number to the nearest 10: ______
- Estimate 59 − 81 by rounding each number to the nearest 10: ______