When you ask "What number is halfway between 86 and 745?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=86 and Y=745.
To find the number halfway between 86 and 745, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 86 and 745 into our formula, we get:
(86 + 745)/2 = 415.5
Thus, the number halfway between 86 and 745 is 415.5.
To check that our answer is correct, we subtract 86 from 415.5 and subtract 415.5 from 745 and compare the two numbers:
415.5 - 86 = 329.5
745 - 415.5 = 329.5
As you can see, the halfway number is 329.5 higher than 86 and 329.5 lower than 745. Therefore, our halfway between answer of 415.5 above is correct.
Halfway Between
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Halfway Between 86 and 746
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