When you ask "What number is halfway between 30 and 229?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=30 and Y=229.
To find the number halfway between 30 and 229, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 30 and 229 into our formula, we get:
(30 + 229)/2 = 129.5
Thus, the number halfway between 30 and 229 is 129.5.
To check that our answer is correct, we subtract 30 from 129.5 and subtract 129.5 from 229 and compare the two numbers:
129.5 - 30 = 99.5
229 - 129.5 = 99.5
As you can see, the halfway number is 99.5 higher than 30 and 99.5 lower than 229. Therefore, our halfway between answer of 129.5 above is correct.
Halfway Between
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Halfway Between 30 and 230
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