When you ask "What number is halfway between 72 and 400?" 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=400.
To find the number halfway between 72 and 400, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 72 and 400 into our formula, we get:
(72 + 400)/2 = 236
Thus, the number halfway between 72 and 400 is 236.
To check that our answer is correct, we subtract 72 from 236 and subtract 236 from 400 and compare the two numbers:
236 - 72 = 164
400 - 236 = 164
As you can see, the halfway number is 164 higher than 72 and 164 lower than 400. Therefore, our halfway between answer of 236 above is correct.
Halfway Between
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Halfway Between 72 and 401
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