Estimation Worksheet
Name: ____________________Date: ____________
Instructions: Estimating sums, differences, and products by rounding and compatible numbers.
20 problems
- Estimate 66 + 21 by rounding each number to the nearest 10: ______
- Estimate 73 − 25 by rounding each number to the nearest 10: ______
- Estimate 72 − 77 by rounding each number to the nearest 10: ______
- Estimate 78 − 28 by rounding each number to the nearest 10: ______
- Estimate 49 + 62 by rounding each number to the nearest 10: ______
- Estimate 21 − 35 by rounding each number to the nearest 10: ______
- Estimate 79 − 27 by rounding each number to the nearest 10: ______
- Estimate 30 + 29 by rounding each number to the nearest 10: ______
- Estimate 80 − 26 by rounding each number to the nearest 10: ______
- Estimate 68 − 85 by rounding each number to the nearest 10: ______
- Estimate 37 − 57 by rounding each number to the nearest 10: ______
- Estimate 83 + 65 by rounding each number to the nearest 10: ______
- Estimate 38 + 31 by rounding each number to the nearest 10: ______
- Estimate 68 + 84 by rounding each number to the nearest 10: ______
- Estimate 74 − 58 by rounding each number to the nearest 10: ______
- Estimate 83 + 54 by rounding each number to the nearest 10: ______
- Estimate 36 − 85 by rounding each number to the nearest 10: ______
- Estimate 34 − 25 by rounding each number to the nearest 10: ______
- Estimate 23 + 61 by rounding each number to the nearest 10: ______
- Estimate 78 − 23 by rounding each number to the nearest 10: ______