When you ask "What number is halfway between 27 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=27 and Y=152.
To find the number halfway between 27 and 152, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 27 and 152 into our formula, we get:
(27 + 152)/2 = 89.5
Thus, the number halfway between 27 and 152 is 89.5.
To check that our answer is correct, we subtract 27 from 89.5 and subtract 89.5 from 152 and compare the two numbers:
89.5 - 27 = 62.5
152 - 89.5 = 62.5
As you can see, the halfway number is 62.5 higher than 27 and 62.5 lower than 152. Therefore, our halfway between answer of 89.5 above is correct.
Halfway Between
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Halfway Between 27 and 153
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