When you ask "What number is halfway between 2 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=2 and Y=79.
To find the number halfway between 2 and 79, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 2 and 79 into our formula, we get:
(2 + 79)/2 = 40.5
Thus, the number halfway between 2 and 79 is 40.5.
To check that our answer is correct, we subtract 2 from 40.5 and subtract 40.5 from 79 and compare the two numbers:
40.5 - 2 = 38.5
79 - 40.5 = 38.5
As you can see, the halfway number is 38.5 higher than 2 and 38.5 lower than 79. Therefore, our halfway between answer of 40.5 above is correct.
Halfway Between
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Halfway Between 2 and 80
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