When you ask "What number is halfway between 87 and 662?" 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=662.
To find the number halfway between 87 and 662, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 87 and 662 into our formula, we get:
(87 + 662)/2 = 374.5
Thus, the number halfway between 87 and 662 is 374.5.
To check that our answer is correct, we subtract 87 from 374.5 and subtract 374.5 from 662 and compare the two numbers:
374.5 - 87 = 287.5
662 - 374.5 = 287.5
As you can see, the halfway number is 287.5 higher than 87 and 287.5 lower than 662. Therefore, our halfway between answer of 374.5 above is correct.
Halfway Between
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Halfway Between 87 and 663
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