When you ask "What number is halfway between 87 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=87 and Y=984.
To find the number halfway between 87 and 984, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 87 and 984 into our formula, we get:
(87 + 984)/2 = 535.5
Thus, the number halfway between 87 and 984 is 535.5.
To check that our answer is correct, we subtract 87 from 535.5 and subtract 535.5 from 984 and compare the two numbers:
535.5 - 87 = 448.5
984 - 535.5 = 448.5
As you can see, the halfway number is 448.5 higher than 87 and 448.5 lower than 984. Therefore, our halfway between answer of 535.5 above is correct.
Halfway Between
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Halfway Between 87 and 985
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