When you ask "What number is halfway between 99 and 730?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=99 and Y=730.
To find the number halfway between 99 and 730, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 99 and 730 into our formula, we get:
(99 + 730)/2 = 414.5
Thus, the number halfway between 99 and 730 is 414.5.
To check that our answer is correct, we subtract 99 from 414.5 and subtract 414.5 from 730 and compare the two numbers:
414.5 - 99 = 315.5
730 - 414.5 = 315.5
As you can see, the halfway number is 315.5 higher than 99 and 315.5 lower than 730. Therefore, our halfway between answer of 414.5 above is correct.
Halfway Between
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Halfway Between 99 and 731
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