When you ask "What number is halfway between 77 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=77 and Y=132.
To find the number halfway between 77 and 132, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 77 and 132 into our formula, we get:
(77 + 132)/2 = 104.5
Thus, the number halfway between 77 and 132 is 104.5.
To check that our answer is correct, we subtract 77 from 104.5 and subtract 104.5 from 132 and compare the two numbers:
104.5 - 77 = 27.5
132 - 104.5 = 27.5
As you can see, the halfway number is 27.5 higher than 77 and 27.5 lower than 132. Therefore, our halfway between answer of 104.5 above is correct.
Halfway Between
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Halfway Between 77 and 133
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