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


  • 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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