When you ask "What number is halfway between 23 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=23 and Y=243.
To find the number halfway between 23 and 243, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 23 and 243 into our formula, we get:
(23 + 243)/2 = 133
Thus, the number halfway between 23 and 243 is 133.
To check that our answer is correct, we subtract 23 from 133 and subtract 133 from 243 and compare the two numbers:
133 - 23 = 110
243 - 133 = 110
As you can see, the halfway number is 110 higher than 23 and 110 lower than 243. Therefore, our halfway between answer of 133 above is correct.
Halfway Between
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Halfway Between 23 and 244
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