Estimation Worksheet
Name: ____________________Date: ____________
Instructions: Estimating sums, differences, and products by rounding and compatible numbers.
20 problems
- Estimate 47 − 27 by rounding each number to the nearest 10: ______
- Estimate 64 + 66 by rounding each number to the nearest 10: ______
- Estimate 55 + 81 by rounding each number to the nearest 10: ______
- Estimate 76 + 87 by rounding each number to the nearest 10: ______
- Estimate 62 − 63 by rounding each number to the nearest 10: ______
- Estimate 28 + 53 by rounding each number to the nearest 10: ______
- Estimate 78 − 43 by rounding each number to the nearest 10: ______
- Estimate 72 − 66 by rounding each number to the nearest 10: ______
- Estimate 79 − 30 by rounding each number to the nearest 10: ______
- Estimate 23 − 47 by rounding each number to the nearest 10: ______
- Estimate 31 − 26 by rounding each number to the nearest 10: ______
- Estimate 35 − 23 by rounding each number to the nearest 10: ______
- Estimate 79 + 58 by rounding each number to the nearest 10: ______
- Estimate 80 + 88 by rounding each number to the nearest 10: ______
- Estimate 84 + 29 by rounding each number to the nearest 10: ______
- Estimate 47 + 31 by rounding each number to the nearest 10: ______
- Estimate 35 + 59 by rounding each number to the nearest 10: ______
- Estimate 77 − 60 by rounding each number to the nearest 10: ______
- Estimate 65 + 42 by rounding each number to the nearest 10: ______
- Estimate 53 + 28 by rounding each number to the nearest 10: ______