When you ask "What number is halfway between 87 and 676?" 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=676.
To find the number halfway between 87 and 676, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 87 and 676 into our formula, we get:
(87 + 676)/2 = 381.5
Thus, the number halfway between 87 and 676 is 381.5.
To check that our answer is correct, we subtract 87 from 381.5 and subtract 381.5 from 676 and compare the two numbers:
381.5 - 87 = 294.5
676 - 381.5 = 294.5
As you can see, the halfway number is 294.5 higher than 87 and 294.5 lower than 676. Therefore, our halfway between answer of 381.5 above is correct.
Halfway Between
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Halfway Between 87 and 677
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