When you ask "What number is halfway between 30 and 637?" 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=637.
To find the number halfway between 30 and 637, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 30 and 637 into our formula, we get:
(30 + 637)/2 = 333.5
Thus, the number halfway between 30 and 637 is 333.5.
To check that our answer is correct, we subtract 30 from 333.5 and subtract 333.5 from 637 and compare the two numbers:
333.5 - 30 = 303.5
637 - 333.5 = 303.5
As you can see, the halfway number is 303.5 higher than 30 and 303.5 lower than 637. Therefore, our halfway between answer of 333.5 above is correct.
Halfway Between
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Halfway Between 30 and 638
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