Estimation Worksheet
Name: ____________________Date: ____________
Instructions: Estimating sums, differences, and products by rounding and compatible numbers.
20 problems
- Estimate 23 + 24 by rounding each number to the nearest 10: ______
- Estimate 30 − 38 by rounding each number to the nearest 10: ______
- Estimate 50 + 71 by rounding each number to the nearest 10: ______
- Estimate 61 − 36 by rounding each number to the nearest 10: ______
- Estimate 27 − 37 by rounding each number to the nearest 10: ______
- Estimate 66 + 77 by rounding each number to the nearest 10: ______
- Estimate 50 + 42 by rounding each number to the nearest 10: ______
- Estimate 63 + 21 by rounding each number to the nearest 10: ______
- Estimate 71 − 21 by rounding each number to the nearest 10: ______
- Estimate 56 − 71 by rounding each number to the nearest 10: ______
- Estimate 60 + 89 by rounding each number to the nearest 10: ______
- Estimate 81 + 26 by rounding each number to the nearest 10: ______
- Estimate 30 − 61 by rounding each number to the nearest 10: ______
- Estimate 28 + 30 by rounding each number to the nearest 10: ______
- Estimate 23 + 60 by rounding each number to the nearest 10: ______
- Estimate 49 − 79 by rounding each number to the nearest 10: ______
- Estimate 66 + 37 by rounding each number to the nearest 10: ______
- Estimate 30 − 69 by rounding each number to the nearest 10: ______
- Estimate 44 − 53 by rounding each number to the nearest 10: ______
- Estimate 69 + 29 by rounding each number to the nearest 10: ______