Estimation Worksheet
Name: ____________________Date: ____________
Instructions: Estimating sums, differences, and products by rounding and compatible numbers.
20 problems
- Estimate 39 + 39 by rounding each number to the nearest 10: ______
- Estimate 64 − 65 by rounding each number to the nearest 10: ______
- Estimate 21 − 68 by rounding each number to the nearest 10: ______
- Estimate 79 + 63 by rounding each number to the nearest 10: ______
- Estimate 24 − 75 by rounding each number to the nearest 10: ______
- Estimate 42 − 39 by rounding each number to the nearest 10: ______
- Estimate 48 + 35 by rounding each number to the nearest 10: ______
- Estimate 50 + 37 by rounding each number to the nearest 10: ______
- Estimate 54 + 58 by rounding each number to the nearest 10: ______
- Estimate 77 + 41 by rounding each number to the nearest 10: ______
- Estimate 43 − 29 by rounding each number to the nearest 10: ______
- Estimate 82 − 48 by rounding each number to the nearest 10: ______
- Estimate 41 + 23 by rounding each number to the nearest 10: ______
- Estimate 77 + 73 by rounding each number to the nearest 10: ______
- Estimate 40 + 47 by rounding each number to the nearest 10: ______
- Estimate 62 − 73 by rounding each number to the nearest 10: ______
- Estimate 69 − 74 by rounding each number to the nearest 10: ______
- Estimate 81 − 87 by rounding each number to the nearest 10: ______
- Estimate 46 + 58 by rounding each number to the nearest 10: ______
- Estimate 66 + 42 by rounding each number to the nearest 10: ______