When you ask "What number is halfway between 7 and 308?" 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=308.
To find the number halfway between 7 and 308, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 7 and 308 into our formula, we get:
(7 + 308)/2 = 157.5
Thus, the number halfway between 7 and 308 is 157.5.
To check that our answer is correct, we subtract 7 from 157.5 and subtract 157.5 from 308 and compare the two numbers:
157.5 - 7 = 150.5
308 - 157.5 = 150.5
As you can see, the halfway number is 150.5 higher than 7 and 150.5 lower than 308. Therefore, our halfway between answer of 157.5 above is correct.
Halfway Between
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Halfway Between 7 and 309
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