When you ask "What number is halfway between 77 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=77 and Y=134.
To find the number halfway between 77 and 134, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 77 and 134 into our formula, we get:
(77 + 134)/2 = 105.5
Thus, the number halfway between 77 and 134 is 105.5.
To check that our answer is correct, we subtract 77 from 105.5 and subtract 105.5 from 134 and compare the two numbers:
105.5 - 77 = 28.5
134 - 105.5 = 28.5
As you can see, the halfway number is 28.5 higher than 77 and 28.5 lower than 134. Therefore, our halfway between answer of 105.5 above is correct.
Halfway Between
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Halfway Between 77 and 135
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