When you ask "What number is halfway between 31 and 134?" 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=134.
To find the number halfway between 31 and 134, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 31 and 134 into our formula, we get:
(31 + 134)/2 = 82.5
Thus, the number halfway between 31 and 134 is 82.5.
To check that our answer is correct, we subtract 31 from 82.5 and subtract 82.5 from 134 and compare the two numbers:
82.5 - 31 = 51.5
134 - 82.5 = 51.5
As you can see, the halfway number is 51.5 higher than 31 and 51.5 lower than 134. Therefore, our halfway between answer of 82.5 above is correct.
Halfway Between
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Halfway Between 31 and 135
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