When you ask "What number is halfway between 18 and 183?" 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=183.
To find the number halfway between 18 and 183, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 18 and 183 into our formula, we get:
(18 + 183)/2 = 100.5
Thus, the number halfway between 18 and 183 is 100.5.
To check that our answer is correct, we subtract 18 from 100.5 and subtract 100.5 from 183 and compare the two numbers:
100.5 - 18 = 82.5
183 - 100.5 = 82.5
As you can see, the halfway number is 82.5 higher than 18 and 82.5 lower than 183. Therefore, our halfway between answer of 100.5 above is correct.
Halfway Between
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Halfway Between 18 and 184
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