When you ask "What number is halfway between 7 and 270?" 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=270.
To find the number halfway between 7 and 270, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 7 and 270 into our formula, we get:
(7 + 270)/2 = 138.5
Thus, the number halfway between 7 and 270 is 138.5.
To check that our answer is correct, we subtract 7 from 138.5 and subtract 138.5 from 270 and compare the two numbers:
138.5 - 7 = 131.5
270 - 138.5 = 131.5
As you can see, the halfway number is 131.5 higher than 7 and 131.5 lower than 270. Therefore, our halfway between answer of 138.5 above is correct.
Halfway Between
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Halfway Between 7 and 271
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