When you ask "What number is halfway between 55 and 530?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=55 and Y=530.
To find the number halfway between 55 and 530, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 55 and 530 into our formula, we get:
(55 + 530)/2 = 292.5
Thus, the number halfway between 55 and 530 is 292.5.
To check that our answer is correct, we subtract 55 from 292.5 and subtract 292.5 from 530 and compare the two numbers:
292.5 - 55 = 237.5
530 - 292.5 = 237.5
As you can see, the halfway number is 237.5 higher than 55 and 237.5 lower than 530. Therefore, our halfway between answer of 292.5 above is correct.
Halfway Between
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Halfway Between 55 and 531
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