When you ask "What number is halfway between 17 and 88?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=17 and Y=88.
To find the number halfway between 17 and 88, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 17 and 88 into our formula, we get:
(17 + 88)/2 = 52.5
Thus, the number halfway between 17 and 88 is 52.5.
To check that our answer is correct, we subtract 17 from 52.5 and subtract 52.5 from 88 and compare the two numbers:
52.5 - 17 = 35.5
88 - 52.5 = 35.5
As you can see, the halfway number is 35.5 higher than 17 and 35.5 lower than 88. Therefore, our halfway between answer of 52.5 above is correct.
Halfway Between
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Halfway Between 17 and 89
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