When you ask "What number is halfway between 69 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=69 and Y=478.
To find the number halfway between 69 and 478, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 69 and 478 into our formula, we get:
(69 + 478)/2 = 273.5
Thus, the number halfway between 69 and 478 is 273.5.
To check that our answer is correct, we subtract 69 from 273.5 and subtract 273.5 from 478 and compare the two numbers:
273.5 - 69 = 204.5
478 - 273.5 = 204.5
As you can see, the halfway number is 204.5 higher than 69 and 204.5 lower than 478. Therefore, our halfway between answer of 273.5 above is correct.
Halfway Between
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Halfway Between 69 and 479
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