When you ask "What number is halfway between 15 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=15 and Y=134.
To find the number halfway between 15 and 134, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 15 and 134 into our formula, we get:
(15 + 134)/2 = 74.5
Thus, the number halfway between 15 and 134 is 74.5.
To check that our answer is correct, we subtract 15 from 74.5 and subtract 74.5 from 134 and compare the two numbers:
74.5 - 15 = 59.5
134 - 74.5 = 59.5
As you can see, the halfway number is 59.5 higher than 15 and 59.5 lower than 134. Therefore, our halfway between answer of 74.5 above is correct.
Halfway Between
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Halfway Between 15 and 135
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