When you ask "What number is halfway between 21 and 752?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=21 and Y=752.
To find the number halfway between 21 and 752, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 21 and 752 into our formula, we get:
(21 + 752)/2 = 386.5
Thus, the number halfway between 21 and 752 is 386.5.
To check that our answer is correct, we subtract 21 from 386.5 and subtract 386.5 from 752 and compare the two numbers:
386.5 - 21 = 365.5
752 - 386.5 = 365.5
As you can see, the halfway number is 365.5 higher than 21 and 365.5 lower than 752. Therefore, our halfway between answer of 386.5 above is correct.
Halfway Between
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Halfway Between 21 and 753
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