Estimation Worksheet
Name: ____________________Date: ____________
Instructions: Estimating sums, differences, and products by rounding and compatible numbers.
20 problems
- Estimate 65 + 47 by rounding each number to the nearest 10: ______
- Estimate 66 + 80 by rounding each number to the nearest 10: ______
- Estimate 69 − 78 by rounding each number to the nearest 10: ______
- Estimate 87 + 43 by rounding each number to the nearest 10: ______
- Estimate 78 − 24 by rounding each number to the nearest 10: ______
- Estimate 33 + 22 by rounding each number to the nearest 10: ______
- Estimate 70 + 77 by rounding each number to the nearest 10: ______
- Estimate 54 − 50 by rounding each number to the nearest 10: ______
- Estimate 61 + 80 by rounding each number to the nearest 10: ______
- Estimate 26 − 38 by rounding each number to the nearest 10: ______
- Estimate 70 − 89 by rounding each number to the nearest 10: ______
- Estimate 84 − 62 by rounding each number to the nearest 10: ______
- Estimate 74 − 82 by rounding each number to the nearest 10: ______
- Estimate 71 − 54 by rounding each number to the nearest 10: ______
- Estimate 42 − 69 by rounding each number to the nearest 10: ______
- Estimate 64 − 66 by rounding each number to the nearest 10: ______
- Estimate 88 + 21 by rounding each number to the nearest 10: ______
- Estimate 29 + 83 by rounding each number to the nearest 10: ______
- Estimate 83 − 86 by rounding each number to the nearest 10: ______
- Estimate 62 + 28 by rounding each number to the nearest 10: ______