When you ask "What number is halfway between 34 and 509?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=34 and Y=509.
To find the number halfway between 34 and 509, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 34 and 509 into our formula, we get:
(34 + 509)/2 = 271.5
Thus, the number halfway between 34 and 509 is 271.5.
To check that our answer is correct, we subtract 34 from 271.5 and subtract 271.5 from 509 and compare the two numbers:
271.5 - 34 = 237.5
509 - 271.5 = 237.5
As you can see, the halfway number is 237.5 higher than 34 and 237.5 lower than 509. Therefore, our halfway between answer of 271.5 above is correct.
Halfway Between
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Halfway Between 34 and 510
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