
When you ask "What number is halfway between 72 and 784?" 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=784.

To find the number halfway between 72 and 784, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 72 and 784 into our formula, we get:
(72 + 784)/2 = 428
Thus, the number halfway between 72 and 784 is 428.
To check that our answer is correct, we subtract 72 from 428 and subtract 428 from 784 and compare the two numbers:
428 - 72 = 356
784 - 428 = 356
As you can see, the halfway number is 356 higher than 72 and 356 lower than 784. Therefore, our halfway between answer of 428 above is correct.
Halfway Between
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Halfway Between 72 and 785
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