Estimation Worksheet
Name: ____________________Date: ____________
Instructions: Estimating sums, differences, and products by rounding and compatible numbers.
20 problems
- Estimate 40 − 61 by rounding each number to the nearest 10: ______
- Estimate 60 + 85 by rounding each number to the nearest 10: ______
- Estimate 81 + 26 by rounding each number to the nearest 10: ______
- Estimate 42 − 40 by rounding each number to the nearest 10: ______
- Estimate 63 + 22 by rounding each number to the nearest 10: ______
- Estimate 56 + 24 by rounding each number to the nearest 10: ______
- Estimate 35 − 39 by rounding each number to the nearest 10: ______
- Estimate 85 − 35 by rounding each number to the nearest 10: ______
- Estimate 62 − 53 by rounding each number to the nearest 10: ______
- Estimate 26 + 59 by rounding each number to the nearest 10: ______
- Estimate 84 − 38 by rounding each number to the nearest 10: ______
- Estimate 45 − 73 by rounding each number to the nearest 10: ______
- Estimate 64 + 43 by rounding each number to the nearest 10: ______
- Estimate 87 − 31 by rounding each number to the nearest 10: ______
- Estimate 42 − 83 by rounding each number to the nearest 10: ______
- Estimate 80 − 73 by rounding each number to the nearest 10: ______
- Estimate 79 + 89 by rounding each number to the nearest 10: ______
- Estimate 31 + 75 by rounding each number to the nearest 10: ______
- Estimate 53 + 36 by rounding each number to the nearest 10: ______
- Estimate 26 − 35 by rounding each number to the nearest 10: ______