When you ask "What number is halfway between 7 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=7 and Y=173.
To find the number halfway between 7 and 173, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 7 and 173 into our formula, we get:
(7 + 173)/2 = 90
Thus, the number halfway between 7 and 173 is 90.
To check that our answer is correct, we subtract 7 from 90 and subtract 90 from 173 and compare the two numbers:
90 - 7 = 83
173 - 90 = 83
As you can see, the halfway number is 83 higher than 7 and 83 lower than 173. Therefore, our halfway between answer of 90 above is correct.
Halfway Between
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Halfway Between 7 and 174
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