When you ask "What number is halfway between 30 and 453?" 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=453.
To find the number halfway between 30 and 453, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 30 and 453 into our formula, we get:
(30 + 453)/2 = 241.5
Thus, the number halfway between 30 and 453 is 241.5.
To check that our answer is correct, we subtract 30 from 241.5 and subtract 241.5 from 453 and compare the two numbers:
241.5 - 30 = 211.5
453 - 241.5 = 211.5
As you can see, the halfway number is 211.5 higher than 30 and 211.5 lower than 453. Therefore, our halfway between answer of 241.5 above is correct.
Halfway Between
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Halfway Between 30 and 454
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