When you ask "What number is halfway between 40 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=40 and Y=157.
To find the number halfway between 40 and 157, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 40 and 157 into our formula, we get:
(40 + 157)/2 = 98.5
Thus, the number halfway between 40 and 157 is 98.5.
To check that our answer is correct, we subtract 40 from 98.5 and subtract 98.5 from 157 and compare the two numbers:
98.5 - 40 = 58.5
157 - 98.5 = 58.5
As you can see, the halfway number is 58.5 higher than 40 and 58.5 lower than 157. Therefore, our halfway between answer of 98.5 above is correct.
Halfway Between
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Halfway Between 40 and 158
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