When you ask "What number is halfway between 7 and 478?" 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=478.
To find the number halfway between 7 and 478, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 7 and 478 into our formula, we get:
(7 + 478)/2 = 242.5
Thus, the number halfway between 7 and 478 is 242.5.
To check that our answer is correct, we subtract 7 from 242.5 and subtract 242.5 from 478 and compare the two numbers:
242.5 - 7 = 235.5
478 - 242.5 = 235.5
As you can see, the halfway number is 235.5 higher than 7 and 235.5 lower than 478. Therefore, our halfway between answer of 242.5 above is correct.
Halfway Between
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Halfway Between 7 and 479
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