Estimation Worksheet
Name: ____________________Date: ____________
Instructions: Estimating sums, differences, and products by rounding and compatible numbers.
20 problems
- Estimate 50 − 74 by rounding each number to the nearest 10: ______
- Estimate 85 − 54 by rounding each number to the nearest 10: ______
- Estimate 30 + 21 by rounding each number to the nearest 10: ______
- Estimate 80 + 30 by rounding each number to the nearest 10: ______
- Estimate 75 + 77 by rounding each number to the nearest 10: ______
- Estimate 78 − 67 by rounding each number to the nearest 10: ______
- Estimate 71 − 80 by rounding each number to the nearest 10: ______
- Estimate 62 − 61 by rounding each number to the nearest 10: ______
- Estimate 68 − 50 by rounding each number to the nearest 10: ______
- Estimate 31 + 64 by rounding each number to the nearest 10: ______
- Estimate 71 − 83 by rounding each number to the nearest 10: ______
- Estimate 55 − 35 by rounding each number to the nearest 10: ______
- Estimate 47 − 52 by rounding each number to the nearest 10: ______
- Estimate 40 − 48 by rounding each number to the nearest 10: ______
- Estimate 75 − 41 by rounding each number to the nearest 10: ______
- Estimate 78 − 51 by rounding each number to the nearest 10: ______
- Estimate 61 + 66 by rounding each number to the nearest 10: ______
- Estimate 69 + 84 by rounding each number to the nearest 10: ______
- Estimate 68 − 25 by rounding each number to the nearest 10: ______
- Estimate 72 − 74 by rounding each number to the nearest 10: ______