When you ask "What number is halfway between 87 and 133?" 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=133.
To find the number halfway between 87 and 133, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 87 and 133 into our formula, we get:
(87 + 133)/2 = 110
Thus, the number halfway between 87 and 133 is 110.
To check that our answer is correct, we subtract 87 from 110 and subtract 110 from 133 and compare the two numbers:
110 - 87 = 23
133 - 110 = 23
As you can see, the halfway number is 23 higher than 87 and 23 lower than 133. Therefore, our halfway between answer of 110 above is correct.
Halfway Between
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Halfway Between 87 and 134
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