When you ask "What number is halfway between 7 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=7 and Y=88.
To find the number halfway between 7 and 88, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 7 and 88 into our formula, we get:
(7 + 88)/2 = 47.5
Thus, the number halfway between 7 and 88 is 47.5.
To check that our answer is correct, we subtract 7 from 47.5 and subtract 47.5 from 88 and compare the two numbers:
47.5 - 7 = 40.5
88 - 47.5 = 40.5
As you can see, the halfway number is 40.5 higher than 7 and 40.5 lower than 88. Therefore, our halfway between answer of 47.5 above is correct.
Halfway Between
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Halfway Between 7 and 89
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