When you ask "What number is halfway between 7 and 388?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=7 and Y=388.
To find the number halfway between 7 and 388, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 7 and 388 into our formula, we get:
(7 + 388)/2 = 197.5
Thus, the number halfway between 7 and 388 is 197.5.
To check that our answer is correct, we subtract 7 from 197.5 and subtract 197.5 from 388 and compare the two numbers:
197.5 - 7 = 190.5
388 - 197.5 = 190.5
As you can see, the halfway number is 190.5 higher than 7 and 190.5 lower than 388. Therefore, our halfway between answer of 197.5 above is correct.
Halfway Between
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Halfway Between 7 and 389
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