When you ask "What number is halfway between 68 and 173?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=68 and Y=173.
To find the number halfway between 68 and 173, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 68 and 173 into our formula, we get:
(68 + 173)/2 = 120.5
Thus, the number halfway between 68 and 173 is 120.5.
To check that our answer is correct, we subtract 68 from 120.5 and subtract 120.5 from 173 and compare the two numbers:
120.5 - 68 = 52.5
173 - 120.5 = 52.5
As you can see, the halfway number is 52.5 higher than 68 and 52.5 lower than 173. Therefore, our halfway between answer of 120.5 above is correct.
Halfway Between
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Halfway Between 68 and 174
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