When you ask "What number is halfway between 30 and 919?" 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=919.
To find the number halfway between 30 and 919, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 30 and 919 into our formula, we get:
(30 + 919)/2 = 474.5
Thus, the number halfway between 30 and 919 is 474.5.
To check that our answer is correct, we subtract 30 from 474.5 and subtract 474.5 from 919 and compare the two numbers:
474.5 - 30 = 444.5
919 - 474.5 = 444.5
As you can see, the halfway number is 444.5 higher than 30 and 444.5 lower than 919. Therefore, our halfway between answer of 474.5 above is correct.
Halfway Between
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Halfway Between 30 and 920
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