Adding 3.6, 4.4, and 5.8: Keeping the Sum 13.8

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SUMMARY

The discussion centers on the arithmetic operation of rounding numbers while maintaining a specific sum. The example provided illustrates the addition of 3.6, 4.4, and 5.8, which totals 13.8. The participant suggests that rounding should be deferred until after completing the arithmetic to ensure accuracy. An alternative method is presented, rounding the numbers to 4.0, 4.0, and 6.0, resulting in a sum of 14.0, which deviates from the desired total.

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Frank66
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just a simple question:
having to round up the following numbers:

3.6 +
4.4 +
5.8 = 13.8

I could do this:

4.0 +
4.0 +
6.0 = 14.0

but wanting to keep the sum?
 
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In general, to be accurate, don't round until after you've finished the arithmetic.
 

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