When you ask "What number is halfway between 8 and 131?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=8 and Y=131.
To find the number halfway between 8 and 131, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 8 and 131 into our formula, we get:
(8 + 131)/2 = 69.5
Thus, the number halfway between 8 and 131 is 69.5.
To check that our answer is correct, we subtract 8 from 69.5 and subtract 69.5 from 131 and compare the two numbers:
69.5 - 8 = 61.5
131 - 69.5 = 61.5
As you can see, the halfway number is 61.5 higher than 8 and 61.5 lower than 131. Therefore, our halfway between answer of 69.5 above is correct.
Halfway Between
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Halfway Between 8 and 132
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