Estimation Worksheet
Name: ____________________Date: ____________
Instructions: Estimating sums, differences, and products by rounding and compatible numbers.
20 problems
- Estimate 79 + 50 by rounding each number to the nearest 10: ______
- Estimate 32 − 43 by rounding each number to the nearest 10: ______
- Estimate 82 − 69 by rounding each number to the nearest 10: ______
- Estimate 21 − 78 by rounding each number to the nearest 10: ______
- Estimate 67 + 32 by rounding each number to the nearest 10: ______
- Estimate 33 + 39 by rounding each number to the nearest 10: ______
- Estimate 39 − 36 by rounding each number to the nearest 10: ______
- Estimate 44 − 61 by rounding each number to the nearest 10: ______
- Estimate 57 + 80 by rounding each number to the nearest 10: ______
- Estimate 55 + 67 by rounding each number to the nearest 10: ______
- Estimate 67 − 65 by rounding each number to the nearest 10: ______
- Estimate 52 + 46 by rounding each number to the nearest 10: ______
- Estimate 83 + 53 by rounding each number to the nearest 10: ______
- Estimate 88 − 37 by rounding each number to the nearest 10: ______
- Estimate 75 + 80 by rounding each number to the nearest 10: ______
- Estimate 51 + 87 by rounding each number to the nearest 10: ______
- Estimate 40 − 39 by rounding each number to the nearest 10: ______
- Estimate 42 − 46 by rounding each number to the nearest 10: ______
- Estimate 72 − 40 by rounding each number to the nearest 10: ______
- Estimate 26 − 79 by rounding each number to the nearest 10: ______