When you ask "What number is halfway between 1 and 318?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=1 and Y=318.
To find the number halfway between 1 and 318, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 1 and 318 into our formula, we get:
(1 + 318)/2 = 159.5
Thus, the number halfway between 1 and 318 is 159.5.
To check that our answer is correct, we subtract 1 from 159.5 and subtract 159.5 from 318 and compare the two numbers:
159.5 - 1 = 158.5
318 - 159.5 = 158.5
As you can see, the halfway number is 158.5 higher than 1 and 158.5 lower than 318. Therefore, our halfway between answer of 159.5 above is correct.
Halfway Between
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Halfway Between 1 and 319
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