When you ask "What number is halfway between 99 and 242?" 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=242.
To find the number halfway between 99 and 242, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 99 and 242 into our formula, we get:
(99 + 242)/2 = 170.5
Thus, the number halfway between 99 and 242 is 170.5.
To check that our answer is correct, we subtract 99 from 170.5 and subtract 170.5 from 242 and compare the two numbers:
170.5 - 99 = 71.5
242 - 170.5 = 71.5
As you can see, the halfway number is 71.5 higher than 99 and 71.5 lower than 242. Therefore, our halfway between answer of 170.5 above is correct.
Halfway Between
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Halfway Between 99 and 243
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