When you ask "What number is halfway between 31 and 146?" 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=146.
To find the number halfway between 31 and 146, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 31 and 146 into our formula, we get:
(31 + 146)/2 = 88.5
Thus, the number halfway between 31 and 146 is 88.5.
To check that our answer is correct, we subtract 31 from 88.5 and subtract 88.5 from 146 and compare the two numbers:
88.5 - 31 = 57.5
146 - 88.5 = 57.5
As you can see, the halfway number is 57.5 higher than 31 and 57.5 lower than 146. Therefore, our halfway between answer of 88.5 above is correct.
Halfway Between
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Halfway Between 31 and 147
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