When you ask "What number is halfway between 30 and 473?" 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=473.
To find the number halfway between 30 and 473, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 30 and 473 into our formula, we get:
(30 + 473)/2 = 251.5
Thus, the number halfway between 30 and 473 is 251.5.
To check that our answer is correct, we subtract 30 from 251.5 and subtract 251.5 from 473 and compare the two numbers:
251.5 - 30 = 221.5
473 - 251.5 = 221.5
As you can see, the halfway number is 221.5 higher than 30 and 221.5 lower than 473. Therefore, our halfway between answer of 251.5 above is correct.
Halfway Between
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Halfway Between 30 and 474
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