Estimation Worksheet
Name: ____________________Date: ____________
Instructions: Estimating sums, differences, and products by rounding and compatible numbers.
20 problems
- Estimate 25 + 47 by rounding each number to the nearest 10: ______
- Estimate 40 − 58 by rounding each number to the nearest 10: ______
- Estimate 83 − 56 by rounding each number to the nearest 10: ______
- Estimate 21 + 83 by rounding each number to the nearest 10: ______
- Estimate 38 + 29 by rounding each number to the nearest 10: ______
- Estimate 84 − 28 by rounding each number to the nearest 10: ______
- Estimate 38 + 51 by rounding each number to the nearest 10: ______
- Estimate 75 + 56 by rounding each number to the nearest 10: ______
- Estimate 78 + 61 by rounding each number to the nearest 10: ______
- Estimate 80 + 31 by rounding each number to the nearest 10: ______
- Estimate 79 + 51 by rounding each number to the nearest 10: ______
- Estimate 59 − 65 by rounding each number to the nearest 10: ______
- Estimate 87 − 70 by rounding each number to the nearest 10: ______
- Estimate 60 + 33 by rounding each number to the nearest 10: ______
- Estimate 21 − 36 by rounding each number to the nearest 10: ______
- Estimate 27 + 21 by rounding each number to the nearest 10: ______
- Estimate 49 + 49 by rounding each number to the nearest 10: ______
- Estimate 75 − 53 by rounding each number to the nearest 10: ______
- Estimate 21 − 85 by rounding each number to the nearest 10: ______
- Estimate 32 − 78 by rounding each number to the nearest 10: ______