When you ask "What number is halfway between 18 and 175?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=18 and Y=175.
To find the number halfway between 18 and 175, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 18 and 175 into our formula, we get:
(18 + 175)/2 = 96.5
Thus, the number halfway between 18 and 175 is 96.5.
To check that our answer is correct, we subtract 18 from 96.5 and subtract 96.5 from 175 and compare the two numbers:
96.5 - 18 = 78.5
175 - 96.5 = 78.5
As you can see, the halfway number is 78.5 higher than 18 and 78.5 lower than 175. Therefore, our halfway between answer of 96.5 above is correct.
Halfway Between
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Halfway Between 18 and 176
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