When you ask "What number is halfway between 18 and 299?" 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=299.
To find the number halfway between 18 and 299, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 18 and 299 into our formula, we get:
(18 + 299)/2 = 158.5
Thus, the number halfway between 18 and 299 is 158.5.
To check that our answer is correct, we subtract 18 from 158.5 and subtract 158.5 from 299 and compare the two numbers:
158.5 - 18 = 140.5
299 - 158.5 = 140.5
As you can see, the halfway number is 140.5 higher than 18 and 140.5 lower than 299. Therefore, our halfway between answer of 158.5 above is correct.
Halfway Between
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Halfway Between 18 and 300
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