When you ask "What number is halfway between 74 and 721?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=74 and Y=721.
To find the number halfway between 74 and 721, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 74 and 721 into our formula, we get:
(74 + 721)/2 = 397.5
Thus, the number halfway between 74 and 721 is 397.5.
To check that our answer is correct, we subtract 74 from 397.5 and subtract 397.5 from 721 and compare the two numbers:
397.5 - 74 = 323.5
721 - 397.5 = 323.5
As you can see, the halfway number is 323.5 higher than 74 and 323.5 lower than 721. Therefore, our halfway between answer of 397.5 above is correct.
Halfway Between
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Halfway Between 74 and 722
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