
When you ask "What number is halfway between 89 and 132?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=89 and Y=132.

To find the number halfway between 89 and 132, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 89 and 132 into our formula, we get:
(89 + 132)/2 = 110.5
Thus, the number halfway between 89 and 132 is 110.5.
To check that our answer is correct, we subtract 89 from 110.5 and subtract 110.5 from 132 and compare the two numbers:
110.5 - 89 = 21.5
132 - 110.5 = 21.5
As you can see, the halfway number is 21.5 higher than 89 and 21.5 lower than 132. Therefore, our halfway between answer of 110.5 above is correct.
Halfway Between
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Halfway Between 89 and 133
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