When you ask "What number is halfway between 31 and 253?" 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=253.
To find the number halfway between 31 and 253, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 31 and 253 into our formula, we get:
(31 + 253)/2 = 142
Thus, the number halfway between 31 and 253 is 142.
To check that our answer is correct, we subtract 31 from 142 and subtract 142 from 253 and compare the two numbers:
142 - 31 = 111
253 - 142 = 111
As you can see, the halfway number is 111 higher than 31 and 111 lower than 253. Therefore, our halfway between answer of 142 above is correct.
Halfway Between
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Halfway Between 31 and 254
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