Estimation Worksheet
Name: ____________________Date: ____________
Instructions: Estimating sums, differences, and products by rounding and compatible numbers.
20 problems
- Estimate 33 − 51 by rounding each number to the nearest 10: ______
- Estimate 40 + 40 by rounding each number to the nearest 10: ______
- Estimate 26 + 85 by rounding each number to the nearest 10: ______
- Estimate 21 − 70 by rounding each number to the nearest 10: ______
- Estimate 59 + 38 by rounding each number to the nearest 10: ______
- Estimate 34 − 40 by rounding each number to the nearest 10: ______
- Estimate 30 + 70 by rounding each number to the nearest 10: ______
- Estimate 78 − 76 by rounding each number to the nearest 10: ______
- Estimate 65 + 69 by rounding each number to the nearest 10: ______
- Estimate 79 + 22 by rounding each number to the nearest 10: ______
- Estimate 83 − 69 by rounding each number to the nearest 10: ______
- Estimate 40 + 84 by rounding each number to the nearest 10: ______
- Estimate 64 − 52 by rounding each number to the nearest 10: ______
- Estimate 25 − 62 by rounding each number to the nearest 10: ______
- Estimate 73 + 43 by rounding each number to the nearest 10: ______
- Estimate 31 − 33 by rounding each number to the nearest 10: ______
- Estimate 61 + 57 by rounding each number to the nearest 10: ______
- Estimate 23 + 57 by rounding each number to the nearest 10: ______
- Estimate 31 + 53 by rounding each number to the nearest 10: ______
- Estimate 30 − 51 by rounding each number to the nearest 10: ______