When you ask "What number is halfway between 72 and 156?" 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=156.
To find the number halfway between 72 and 156, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 72 and 156 into our formula, we get:
(72 + 156)/2 = 114
Thus, the number halfway between 72 and 156 is 114.
To check that our answer is correct, we subtract 72 from 114 and subtract 114 from 156 and compare the two numbers:
114 - 72 = 42
156 - 114 = 42
As you can see, the halfway number is 42 higher than 72 and 42 lower than 156. Therefore, our halfway between answer of 114 above is correct.
Halfway Between
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Halfway Between 72 and 157
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