Estimation Worksheet
Name: ____________________Date: ____________
Instructions: Estimating sums, differences, and products by rounding and compatible numbers.
20 problems
- Estimate 28 + 35 by rounding each number to the nearest 10: ______
- Estimate 64 − 67 by rounding each number to the nearest 10: ______
- Estimate 60 + 21 by rounding each number to the nearest 10: ______
- Estimate 89 + 38 by rounding each number to the nearest 10: ______
- Estimate 81 − 23 by rounding each number to the nearest 10: ______
- Estimate 21 + 70 by rounding each number to the nearest 10: ______
- Estimate 63 − 52 by rounding each number to the nearest 10: ______
- Estimate 64 − 65 by rounding each number to the nearest 10: ______
- Estimate 73 − 45 by rounding each number to the nearest 10: ______
- Estimate 26 + 43 by rounding each number to the nearest 10: ______
- Estimate 59 + 71 by rounding each number to the nearest 10: ______
- Estimate 85 + 85 by rounding each number to the nearest 10: ______
- Estimate 77 − 89 by rounding each number to the nearest 10: ______
- Estimate 46 − 60 by rounding each number to the nearest 10: ______
- Estimate 85 − 55 by rounding each number to the nearest 10: ______
- Estimate 56 + 70 by rounding each number to the nearest 10: ______
- Estimate 71 + 36 by rounding each number to the nearest 10: ______
- Estimate 66 − 71 by rounding each number to the nearest 10: ______
- Estimate 58 − 69 by rounding each number to the nearest 10: ______
- Estimate 49 − 31 by rounding each number to the nearest 10: ______