Estimation Worksheet
Name: ____________________Date: ____________
Instructions: Estimating sums, differences, and products by rounding and compatible numbers.
20 problems
- Estimate 46 − 42 by rounding each number to the nearest 10: ______
- Estimate 46 + 45 by rounding each number to the nearest 10: ______
- Estimate 70 − 38 by rounding each number to the nearest 10: ______
- Estimate 43 + 25 by rounding each number to the nearest 10: ______
- Estimate 60 + 49 by rounding each number to the nearest 10: ______
- Estimate 44 − 63 by rounding each number to the nearest 10: ______
- Estimate 63 − 57 by rounding each number to the nearest 10: ______
- Estimate 65 + 60 by rounding each number to the nearest 10: ______
- Estimate 87 + 86 by rounding each number to the nearest 10: ______
- Estimate 25 − 77 by rounding each number to the nearest 10: ______
- Estimate 49 + 70 by rounding each number to the nearest 10: ______
- Estimate 86 + 70 by rounding each number to the nearest 10: ______
- Estimate 57 + 89 by rounding each number to the nearest 10: ______
- Estimate 24 − 71 by rounding each number to the nearest 10: ______
- Estimate 78 − 57 by rounding each number to the nearest 10: ______
- Estimate 71 − 65 by rounding each number to the nearest 10: ______
- Estimate 31 − 62 by rounding each number to the nearest 10: ______
- Estimate 48 + 25 by rounding each number to the nearest 10: ______
- Estimate 82 − 24 by rounding each number to the nearest 10: ______
- Estimate 81 + 40 by rounding each number to the nearest 10: ______