When you ask "What number is halfway between 1 and 156?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=1 and Y=156.
To find the number halfway between 1 and 156, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 1 and 156 into our formula, we get:
(1 + 156)/2 = 78.5
Thus, the number halfway between 1 and 156 is 78.5.
To check that our answer is correct, we subtract 1 from 78.5 and subtract 78.5 from 156 and compare the two numbers:
78.5 - 1 = 77.5
156 - 78.5 = 77.5
As you can see, the halfway number is 77.5 higher than 1 and 77.5 lower than 156. Therefore, our halfway between answer of 78.5 above is correct.
Halfway Between
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Halfway Between 1 and 157
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