When you ask "What number is halfway between 77 and 984?" 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=984.
To find the number halfway between 77 and 984, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 77 and 984 into our formula, we get:
(77 + 984)/2 = 530.5
Thus, the number halfway between 77 and 984 is 530.5.
To check that our answer is correct, we subtract 77 from 530.5 and subtract 530.5 from 984 and compare the two numbers:
530.5 - 77 = 453.5
984 - 530.5 = 453.5
As you can see, the halfway number is 453.5 higher than 77 and 453.5 lower than 984. Therefore, our halfway between answer of 530.5 above is correct.
Halfway Between
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Halfway Between 77 and 985
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