When you ask "What number is halfway between 30 and 297?" 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=297.
To find the number halfway between 30 and 297, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 30 and 297 into our formula, we get:
(30 + 297)/2 = 163.5
Thus, the number halfway between 30 and 297 is 163.5.
To check that our answer is correct, we subtract 30 from 163.5 and subtract 163.5 from 297 and compare the two numbers:
163.5 - 30 = 133.5
297 - 163.5 = 133.5
As you can see, the halfway number is 133.5 higher than 30 and 133.5 lower than 297. Therefore, our halfway between answer of 163.5 above is correct.
Halfway Between
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Halfway Between 30 and 298
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