When you ask "What number is halfway between 31 and 74?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=31 and Y=74.
To find the number halfway between 31 and 74, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 31 and 74 into our formula, we get:
(31 + 74)/2 = 52.5
Thus, the number halfway between 31 and 74 is 52.5.
To check that our answer is correct, we subtract 31 from 52.5 and subtract 52.5 from 74 and compare the two numbers:
52.5 - 31 = 21.5
74 - 52.5 = 21.5
As you can see, the halfway number is 21.5 higher than 31 and 21.5 lower than 74. Therefore, our halfway between answer of 52.5 above is correct.
Halfway Between
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Halfway Between 31 and 75
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