When you ask "What number is halfway between 18 and 107?" 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=107.
To find the number halfway between 18 and 107, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 18 and 107 into our formula, we get:
(18 + 107)/2 = 62.5
Thus, the number halfway between 18 and 107 is 62.5.
To check that our answer is correct, we subtract 18 from 62.5 and subtract 62.5 from 107 and compare the two numbers:
62.5 - 18 = 44.5
107 - 62.5 = 44.5
As you can see, the halfway number is 44.5 higher than 18 and 44.5 lower than 107. Therefore, our halfway between answer of 62.5 above is correct.
Halfway Between
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Halfway Between 18 and 108
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