Estimation Worksheet
Name: ____________________Date: ____________
Instructions: Estimating sums, differences, and products by rounding and compatible numbers.
20 problems
- Estimate 40 − 78 by rounding each number to the nearest 10: ______
- Estimate 28 − 70 by rounding each number to the nearest 10: ______
- Estimate 68 + 79 by rounding each number to the nearest 10: ______
- Estimate 73 − 60 by rounding each number to the nearest 10: ______
- Estimate 60 + 70 by rounding each number to the nearest 10: ______
- Estimate 73 + 77 by rounding each number to the nearest 10: ______
- Estimate 64 − 85 by rounding each number to the nearest 10: ______
- Estimate 88 + 22 by rounding each number to the nearest 10: ______
- Estimate 82 − 64 by rounding each number to the nearest 10: ______
- Estimate 28 + 67 by rounding each number to the nearest 10: ______
- Estimate 86 − 30 by rounding each number to the nearest 10: ______
- Estimate 69 + 36 by rounding each number to the nearest 10: ______
- Estimate 35 − 22 by rounding each number to the nearest 10: ______
- Estimate 59 + 25 by rounding each number to the nearest 10: ______
- Estimate 74 + 66 by rounding each number to the nearest 10: ______
- Estimate 41 + 77 by rounding each number to the nearest 10: ______
- Estimate 83 + 54 by rounding each number to the nearest 10: ______
- Estimate 49 − 23 by rounding each number to the nearest 10: ______
- Estimate 54 + 23 by rounding each number to the nearest 10: ______
- Estimate 75 − 72 by rounding each number to the nearest 10: ______