Front-End Estimation of Differences
Front-End Estimation: Learn
Front end estimation mostly produces a closer estimate of sums or differences than the answer produced by adding or subtracting rounded numbers.
How to Estimate a difference by Front-End Estimation:
- Subtract the digits of the two highest place values
- Insert zeros for the other place values
Examples:
- Subtract 7396 - 3745 by estimating them as 7300 - 3700 = 3600.
- Subtract 5196 - 745 by estimating them as 5100 - 700 = 4400.
Subtract with Front-End Estimation: Practice
Estimate the difference using Front-End Estimation
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