When you ask "What number is halfway between 77 and 152?" 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=152.
To find the number halfway between 77 and 152, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 77 and 152 into our formula, we get:
(77 + 152)/2 = 114.5
Thus, the number halfway between 77 and 152 is 114.5.
To check that our answer is correct, we subtract 77 from 114.5 and subtract 114.5 from 152 and compare the two numbers:
114.5 - 77 = 37.5
152 - 114.5 = 37.5
As you can see, the halfway number is 37.5 higher than 77 and 37.5 lower than 152. Therefore, our halfway between answer of 114.5 above is correct.
Halfway Between
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Halfway Between 77 and 153
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