When you ask "What number is halfway between 30 and 705?" 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=705.
To find the number halfway between 30 and 705, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 30 and 705 into our formula, we get:
(30 + 705)/2 = 367.5
Thus, the number halfway between 30 and 705 is 367.5.
To check that our answer is correct, we subtract 30 from 367.5 and subtract 367.5 from 705 and compare the two numbers:
367.5 - 30 = 337.5
705 - 367.5 = 337.5
As you can see, the halfway number is 337.5 higher than 30 and 337.5 lower than 705. Therefore, our halfway between answer of 367.5 above is correct.
Halfway Between
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Halfway Between 30 and 706
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