Estimation Worksheet
Name: ____________________Date: ____________
Instructions: Estimating sums, differences, and products by rounding and compatible numbers.
20 problems
- Estimate 47 + 61 by rounding each number to the nearest 10: ______
- Estimate 76 + 89 by rounding each number to the nearest 10: ______
- Estimate 53 − 65 by rounding each number to the nearest 10: ______
- Estimate 25 + 80 by rounding each number to the nearest 10: ______
- Estimate 47 − 76 by rounding each number to the nearest 10: ______
- Estimate 70 + 82 by rounding each number to the nearest 10: ______
- Estimate 66 + 87 by rounding each number to the nearest 10: ______
- Estimate 23 + 42 by rounding each number to the nearest 10: ______
- Estimate 34 + 35 by rounding each number to the nearest 10: ______
- Estimate 48 − 23 by rounding each number to the nearest 10: ______
- Estimate 65 + 50 by rounding each number to the nearest 10: ______
- Estimate 66 − 55 by rounding each number to the nearest 10: ______
- Estimate 48 + 41 by rounding each number to the nearest 10: ______
- Estimate 30 + 55 by rounding each number to the nearest 10: ______
- Estimate 80 + 71 by rounding each number to the nearest 10: ______
- Estimate 50 − 48 by rounding each number to the nearest 10: ______
- Estimate 31 + 21 by rounding each number to the nearest 10: ______
- Estimate 72 + 36 by rounding each number to the nearest 10: ______
- Estimate 51 − 44 by rounding each number to the nearest 10: ______
- Estimate 30 − 24 by rounding each number to the nearest 10: ______