Estimation Worksheet
Name: ____________________Date: ____________
Instructions: Estimating sums, differences, and products by rounding and compatible numbers.
20 problems
- Estimate 70 − 23 by rounding each number to the nearest 10: ______
- Estimate 86 − 85 by rounding each number to the nearest 10: ______
- Estimate 48 + 63 by rounding each number to the nearest 10: ______
- Estimate 75 − 86 by rounding each number to the nearest 10: ______
- Estimate 48 + 31 by rounding each number to the nearest 10: ______
- Estimate 33 − 42 by rounding each number to the nearest 10: ______
- Estimate 77 + 88 by rounding each number to the nearest 10: ______
- Estimate 44 + 26 by rounding each number to the nearest 10: ______
- Estimate 26 − 42 by rounding each number to the nearest 10: ______
- Estimate 83 + 67 by rounding each number to the nearest 10: ______
- Estimate 68 − 28 by rounding each number to the nearest 10: ______
- Estimate 44 − 87 by rounding each number to the nearest 10: ______
- Estimate 77 + 28 by rounding each number to the nearest 10: ______
- Estimate 73 + 33 by rounding each number to the nearest 10: ______
- Estimate 61 + 34 by rounding each number to the nearest 10: ______
- Estimate 27 − 58 by rounding each number to the nearest 10: ______
- Estimate 78 + 21 by rounding each number to the nearest 10: ______
- Estimate 74 + 74 by rounding each number to the nearest 10: ______
- Estimate 44 − 49 by rounding each number to the nearest 10: ______
- Estimate 78 − 45 by rounding each number to the nearest 10: ______