When you ask "What number is halfway between 79 and 664?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=79 and Y=664.
To find the number halfway between 79 and 664, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 79 and 664 into our formula, we get:
(79 + 664)/2 = 371.5
Thus, the number halfway between 79 and 664 is 371.5.
To check that our answer is correct, we subtract 79 from 371.5 and subtract 371.5 from 664 and compare the two numbers:
371.5 - 79 = 292.5
664 - 371.5 = 292.5
As you can see, the halfway number is 292.5 higher than 79 and 292.5 lower than 664. Therefore, our halfway between answer of 371.5 above is correct.
Halfway Between
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Halfway Between 79 and 665
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