When you ask "What number is halfway between 15 and 992?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=15 and Y=992.
To find the number halfway between 15 and 992, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 15 and 992 into our formula, we get:
(15 + 992)/2 = 503.5
Thus, the number halfway between 15 and 992 is 503.5.
To check that our answer is correct, we subtract 15 from 503.5 and subtract 503.5 from 992 and compare the two numbers:
503.5 - 15 = 488.5
992 - 503.5 = 488.5
As you can see, the halfway number is 488.5 higher than 15 and 488.5 lower than 992. Therefore, our halfway between answer of 503.5 above is correct.
Halfway Between
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Halfway Between 15 and 993
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