Estimation Worksheet
Name: ____________________Date: ____________
Instructions: Estimating sums, differences, and products by rounding and compatible numbers.
20 problems
- Estimate 21 + 31 by rounding each number to the nearest 10: ______
- Estimate 55 − 39 by rounding each number to the nearest 10: ______
- Estimate 55 − 48 by rounding each number to the nearest 10: ______
- Estimate 84 − 24 by rounding each number to the nearest 10: ______
- Estimate 25 + 73 by rounding each number to the nearest 10: ______
- Estimate 34 − 24 by rounding each number to the nearest 10: ______
- Estimate 87 + 69 by rounding each number to the nearest 10: ______
- Estimate 75 + 26 by rounding each number to the nearest 10: ______
- Estimate 31 + 77 by rounding each number to the nearest 10: ______
- Estimate 71 − 47 by rounding each number to the nearest 10: ______
- Estimate 80 − 60 by rounding each number to the nearest 10: ______
- Estimate 48 − 60 by rounding each number to the nearest 10: ______
- Estimate 66 − 75 by rounding each number to the nearest 10: ______
- Estimate 42 − 32 by rounding each number to the nearest 10: ______
- Estimate 78 + 55 by rounding each number to the nearest 10: ______
- Estimate 80 + 61 by rounding each number to the nearest 10: ______
- Estimate 76 + 29 by rounding each number to the nearest 10: ______
- Estimate 22 + 86 by rounding each number to the nearest 10: ______
- Estimate 66 − 52 by rounding each number to the nearest 10: ______
- Estimate 45 − 74 by rounding each number to the nearest 10: ______