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Q&A #1154 |
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Here's an idea just quickly off the top of my head. If I were in a store, tallying the total quickly in my head as I went, and I had pruchases of 5.45, 6.49, 7.48, 2.42, and 1.49, rounding would get me the answer to 5 + 6 + 7 + 2 + 1, or 21. With front end estimation I would add the whole numbers, getting $21, and then refine that estimate by noting that there are about $2.50 more there, for an estimate of $23.50. The actual sum is $23.33. Now, if I wasn't worried about the money I was spending, either method would do it for me. If I am trying to quickly get as close as I can to an amount, front-end estimation could be a quick way to do that. -Gail, for the Teacher2Teacher service
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