When you ask "What number is halfway between 31 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=31 and Y=984.
To find the number halfway between 31 and 984, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 31 and 984 into our formula, we get:
(31 + 984)/2 = 507.5
Thus, the number halfway between 31 and 984 is 507.5.
To check that our answer is correct, we subtract 31 from 507.5 and subtract 507.5 from 984 and compare the two numbers:
507.5 - 31 = 476.5
984 - 507.5 = 476.5
As you can see, the halfway number is 476.5 higher than 31 and 476.5 lower than 984. Therefore, our halfway between answer of 507.5 above is correct.
Halfway Between
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Halfway Between 31 and 985
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