When you ask "What number is halfway between 31 and 230?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=31 and Y=230.
To find the number halfway between 31 and 230, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 31 and 230 into our formula, we get:
(31 + 230)/2 = 130.5
Thus, the number halfway between 31 and 230 is 130.5.
To check that our answer is correct, we subtract 31 from 130.5 and subtract 130.5 from 230 and compare the two numbers:
130.5 - 31 = 99.5
230 - 130.5 = 99.5
As you can see, the halfway number is 99.5 higher than 31 and 99.5 lower than 230. Therefore, our halfway between answer of 130.5 above is correct.
Halfway Between
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Halfway Between 31 and 231
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