When you ask "What number is halfway between 7 and 40?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=7 and Y=40.
To find the number halfway between 7 and 40, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 7 and 40 into our formula, we get:
(7 + 40)/2 = 23.5
Thus, the number halfway between 7 and 40 is 23.5.
To check that our answer is correct, we subtract 7 from 23.5 and subtract 23.5 from 40 and compare the two numbers:
23.5 - 7 = 16.5
40 - 23.5 = 16.5
As you can see, the halfway number is 16.5 higher than 7 and 16.5 lower than 40. Therefore, our halfway between answer of 23.5 above is correct.
Halfway Between
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Halfway Between 7 and 41
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