When you ask "What number is halfway between 18 and 330?" 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=330.
To find the number halfway between 18 and 330, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 18 and 330 into our formula, we get:
(18 + 330)/2 = 174
Thus, the number halfway between 18 and 330 is 174.
To check that our answer is correct, we subtract 18 from 174 and subtract 174 from 330 and compare the two numbers:
174 - 18 = 156
330 - 174 = 156
As you can see, the halfway number is 156 higher than 18 and 156 lower than 330. Therefore, our halfway between answer of 174 above is correct.
Halfway Between
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Halfway Between 18 and 331
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