When you ask "What number is halfway between 30 and 769?" 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=769.
To find the number halfway between 30 and 769, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 30 and 769 into our formula, we get:
(30 + 769)/2 = 399.5
Thus, the number halfway between 30 and 769 is 399.5.
To check that our answer is correct, we subtract 30 from 399.5 and subtract 399.5 from 769 and compare the two numbers:
399.5 - 30 = 369.5
769 - 399.5 = 369.5
As you can see, the halfway number is 369.5 higher than 30 and 369.5 lower than 769. Therefore, our halfway between answer of 399.5 above is correct.
Halfway Between
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Halfway Between 30 and 770
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