When you ask "What number is halfway between 87 and 626?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=87 and Y=626.
To find the number halfway between 87 and 626, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 87 and 626 into our formula, we get:
(87 + 626)/2 = 356.5
Thus, the number halfway between 87 and 626 is 356.5.
To check that our answer is correct, we subtract 87 from 356.5 and subtract 356.5 from 626 and compare the two numbers:
356.5 - 87 = 269.5
626 - 356.5 = 269.5
As you can see, the halfway number is 269.5 higher than 87 and 269.5 lower than 626. Therefore, our halfway between answer of 356.5 above is correct.
Halfway Between
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Halfway Between 87 and 627
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