When you ask "What number is halfway between 99 and 442?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=99 and Y=442.
To find the number halfway between 99 and 442, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 99 and 442 into our formula, we get:
(99 + 442)/2 = 270.5
Thus, the number halfway between 99 and 442 is 270.5.
To check that our answer is correct, we subtract 99 from 270.5 and subtract 270.5 from 442 and compare the two numbers:
270.5 - 99 = 171.5
442 - 270.5 = 171.5
As you can see, the halfway number is 171.5 higher than 99 and 171.5 lower than 442. Therefore, our halfway between answer of 270.5 above is correct.
Halfway Between
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Halfway Between 99 and 443
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