Estimation Worksheet
Name: ____________________Date: ____________
Instructions: Estimating sums, differences, and products by rounding and compatible numbers.
20 problems
- Estimate 50 − 48 by rounding each number to the nearest 10: ______
- Estimate 38 + 21 by rounding each number to the nearest 10: ______
- Estimate 84 + 77 by rounding each number to the nearest 10: ______
- Estimate 59 + 84 by rounding each number to the nearest 10: ______
- Estimate 34 + 51 by rounding each number to the nearest 10: ______
- Estimate 40 + 30 by rounding each number to the nearest 10: ______
- Estimate 60 − 80 by rounding each number to the nearest 10: ______
- Estimate 24 + 50 by rounding each number to the nearest 10: ______
- Estimate 32 − 85 by rounding each number to the nearest 10: ______
- Estimate 68 + 30 by rounding each number to the nearest 10: ______
- Estimate 28 − 33 by rounding each number to the nearest 10: ______
- Estimate 29 + 21 by rounding each number to the nearest 10: ______
- Estimate 50 − 74 by rounding each number to the nearest 10: ______
- Estimate 29 + 77 by rounding each number to the nearest 10: ______
- Estimate 66 − 85 by rounding each number to the nearest 10: ______
- Estimate 73 − 42 by rounding each number to the nearest 10: ______
- Estimate 60 − 83 by rounding each number to the nearest 10: ______
- Estimate 66 − 63 by rounding each number to the nearest 10: ______
- Estimate 58 + 81 by rounding each number to the nearest 10: ______
- Estimate 77 + 72 by rounding each number to the nearest 10: ______