Estimation Worksheet
Name: ____________________Date: ____________
Instructions: Estimating sums, differences, and products by rounding and compatible numbers.
20 problems
- Estimate 21 + 55 by rounding each number to the nearest 10: ______
- Estimate 34 − 59 by rounding each number to the nearest 10: ______
- Estimate 53 + 21 by rounding each number to the nearest 10: ______
- Estimate 77 − 78 by rounding each number to the nearest 10: ______
- Estimate 76 + 65 by rounding each number to the nearest 10: ______
- Estimate 77 + 77 by rounding each number to the nearest 10: ______
- Estimate 35 − 41 by rounding each number to the nearest 10: ______
- Estimate 81 − 35 by rounding each number to the nearest 10: ______
- Estimate 72 + 87 by rounding each number to the nearest 10: ______
- Estimate 35 + 74 by rounding each number to the nearest 10: ______
- Estimate 65 − 33 by rounding each number to the nearest 10: ______
- Estimate 70 + 42 by rounding each number to the nearest 10: ______
- Estimate 75 − 63 by rounding each number to the nearest 10: ______
- Estimate 49 + 28 by rounding each number to the nearest 10: ______
- Estimate 88 + 63 by rounding each number to the nearest 10: ______
- Estimate 35 − 59 by rounding each number to the nearest 10: ______
- Estimate 87 − 50 by rounding each number to the nearest 10: ______
- Estimate 47 − 48 by rounding each number to the nearest 10: ______
- Estimate 81 + 57 by rounding each number to the nearest 10: ______
- Estimate 41 + 45 by rounding each number to the nearest 10: ______