When you ask "What number is halfway between 7 and 770?" 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=770.
To find the number halfway between 7 and 770, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 7 and 770 into our formula, we get:
(7 + 770)/2 = 388.5
Thus, the number halfway between 7 and 770 is 388.5.
To check that our answer is correct, we subtract 7 from 388.5 and subtract 388.5 from 770 and compare the two numbers:
388.5 - 7 = 381.5
770 - 388.5 = 381.5
As you can see, the halfway number is 381.5 higher than 7 and 381.5 lower than 770. Therefore, our halfway between answer of 388.5 above is correct.
Halfway Between
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Halfway Between 7 and 771
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