Estimation Worksheet
Name: ____________________Date: ____________
Instructions: Estimating sums, differences, and products by rounding and compatible numbers.
20 problems
- Estimate 40 + 65 by rounding each number to the nearest 10: ______
- Estimate 70 + 62 by rounding each number to the nearest 10: ______
- Estimate 87 + 63 by rounding each number to the nearest 10: ______
- Estimate 65 + 53 by rounding each number to the nearest 10: ______
- Estimate 85 − 55 by rounding each number to the nearest 10: ______
- Estimate 29 + 67 by rounding each number to the nearest 10: ______
- Estimate 21 + 38 by rounding each number to the nearest 10: ______
- Estimate 46 + 44 by rounding each number to the nearest 10: ______
- Estimate 64 + 56 by rounding each number to the nearest 10: ______
- Estimate 25 − 38 by rounding each number to the nearest 10: ______
- Estimate 21 + 46 by rounding each number to the nearest 10: ______
- Estimate 29 − 81 by rounding each number to the nearest 10: ______
- Estimate 75 + 24 by rounding each number to the nearest 10: ______
- Estimate 52 + 47 by rounding each number to the nearest 10: ______
- Estimate 63 − 59 by rounding each number to the nearest 10: ______
- Estimate 67 − 88 by rounding each number to the nearest 10: ______
- Estimate 87 − 68 by rounding each number to the nearest 10: ______
- Estimate 88 + 21 by rounding each number to the nearest 10: ______
- Estimate 27 + 72 by rounding each number to the nearest 10: ______
- Estimate 34 − 74 by rounding each number to the nearest 10: ______