When you ask "What number is halfway between 30 and 349?" 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=349.
To find the number halfway between 30 and 349, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 30 and 349 into our formula, we get:
(30 + 349)/2 = 189.5
Thus, the number halfway between 30 and 349 is 189.5.
To check that our answer is correct, we subtract 30 from 189.5 and subtract 189.5 from 349 and compare the two numbers:
189.5 - 30 = 159.5
349 - 189.5 = 159.5
As you can see, the halfway number is 159.5 higher than 30 and 159.5 lower than 349. Therefore, our halfway between answer of 189.5 above is correct.
Halfway Between
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Halfway Between 30 and 350
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