Estimation Worksheet
Name: ____________________Date: ____________
Instructions: Estimating sums, differences, and products by rounding and compatible numbers.
20 problems
- Estimate 39 + 84 by rounding each number to the nearest 10: ______
- Estimate 77 − 29 by rounding each number to the nearest 10: ______
- Estimate 48 − 71 by rounding each number to the nearest 10: ______
- Estimate 82 − 89 by rounding each number to the nearest 10: ______
- Estimate 64 + 60 by rounding each number to the nearest 10: ______
- Estimate 83 − 28 by rounding each number to the nearest 10: ______
- Estimate 33 − 52 by rounding each number to the nearest 10: ______
- Estimate 79 − 74 by rounding each number to the nearest 10: ______
- Estimate 35 + 56 by rounding each number to the nearest 10: ______
- Estimate 88 − 57 by rounding each number to the nearest 10: ______
- Estimate 35 − 71 by rounding each number to the nearest 10: ______
- Estimate 61 + 44 by rounding each number to the nearest 10: ______
- Estimate 21 − 39 by rounding each number to the nearest 10: ______
- Estimate 74 + 85 by rounding each number to the nearest 10: ______
- Estimate 67 − 24 by rounding each number to the nearest 10: ______
- Estimate 26 − 23 by rounding each number to the nearest 10: ______
- Estimate 89 + 89 by rounding each number to the nearest 10: ______
- Estimate 54 − 75 by rounding each number to the nearest 10: ______
- Estimate 55 − 24 by rounding each number to the nearest 10: ______
- Estimate 21 + 89 by rounding each number to the nearest 10: ______