When you ask "What number is halfway between 30 and 529?" 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=529.
To find the number halfway between 30 and 529, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 30 and 529 into our formula, we get:
(30 + 529)/2 = 279.5
Thus, the number halfway between 30 and 529 is 279.5.
To check that our answer is correct, we subtract 30 from 279.5 and subtract 279.5 from 529 and compare the two numbers:
279.5 - 30 = 249.5
529 - 279.5 = 249.5
As you can see, the halfway number is 249.5 higher than 30 and 249.5 lower than 529. Therefore, our halfway between answer of 279.5 above is correct.
Halfway Between
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Halfway Between 30 and 530
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