When you ask "What number is halfway between 77 and 612?" 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=612.
To find the number halfway between 77 and 612, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 77 and 612 into our formula, we get:
(77 + 612)/2 = 344.5
Thus, the number halfway between 77 and 612 is 344.5.
To check that our answer is correct, we subtract 77 from 344.5 and subtract 344.5 from 612 and compare the two numbers:
344.5 - 77 = 267.5
612 - 344.5 = 267.5
As you can see, the halfway number is 267.5 higher than 77 and 267.5 lower than 612. Therefore, our halfway between answer of 344.5 above is correct.
Halfway Between
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Halfway Between 77 and 613
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