When you ask "What number is halfway between 57 and 79?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=57 and Y=79.
To find the number halfway between 57 and 79, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 57 and 79 into our formula, we get:
(57 + 79)/2 = 68
Thus, the number halfway between 57 and 79 is 68.
To check that our answer is correct, we subtract 57 from 68 and subtract 68 from 79 and compare the two numbers:
68 - 57 = 11
79 - 68 = 11
As you can see, the halfway number is 11 higher than 57 and 11 lower than 79. Therefore, our halfway between answer of 68 above is correct.
Halfway Between
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Halfway Between 57 and 80
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