When you ask "What number is halfway between 18 and 338?" 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=338.
To find the number halfway between 18 and 338, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 18 and 338 into our formula, we get:
(18 + 338)/2 = 178
Thus, the number halfway between 18 and 338 is 178.
To check that our answer is correct, we subtract 18 from 178 and subtract 178 from 338 and compare the two numbers:
178 - 18 = 160
338 - 178 = 160
As you can see, the halfway number is 160 higher than 18 and 160 lower than 338. Therefore, our halfway between answer of 178 above is correct.
Halfway Between
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Halfway Between 18 and 339
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