When you ask "What number is halfway between 72 and 787?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=72 and Y=787.
To find the number halfway between 72 and 787, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 72 and 787 into our formula, we get:
(72 + 787)/2 = 429.5
Thus, the number halfway between 72 and 787 is 429.5.
To check that our answer is correct, we subtract 72 from 429.5 and subtract 429.5 from 787 and compare the two numbers:
429.5 - 72 = 357.5
787 - 429.5 = 357.5
As you can see, the halfway number is 357.5 higher than 72 and 357.5 lower than 787. Therefore, our halfway between answer of 429.5 above is correct.
Halfway Between
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Halfway Between 72 and 788
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