When you ask "What number is halfway between 0 and 243?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=0 and Y=243.
To find the number halfway between 0 and 243, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 0 and 243 into our formula, we get:
(0 + 243)/2 = 121.5
Thus, the number halfway between 0 and 243 is 121.5.
To check that our answer is correct, we subtract 0 from 121.5 and subtract 121.5 from 243 and compare the two numbers:
121.5 - 0 = 121.5
243 - 121.5 = 121.5
As you can see, the halfway number is 121.5 higher than 0 and 121.5 lower than 243. Therefore, our halfway between answer of 121.5 above is correct.
Halfway Between
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Halfway Between 0 and 244
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