When you ask "What number is halfway between 80 and 157?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=80 and Y=157.
To find the number halfway between 80 and 157, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 80 and 157 into our formula, we get:
(80 + 157)/2 = 118.5
Thus, the number halfway between 80 and 157 is 118.5.
To check that our answer is correct, we subtract 80 from 118.5 and subtract 118.5 from 157 and compare the two numbers:
118.5 - 80 = 38.5
157 - 118.5 = 38.5
As you can see, the halfway number is 38.5 higher than 80 and 38.5 lower than 157. Therefore, our halfway between answer of 118.5 above is correct.
Halfway Between
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Halfway Between 80 and 158
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