When you ask "What number is halfway between 78 and 283?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=78 and Y=283.
To find the number halfway between 78 and 283, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 78 and 283 into our formula, we get:
(78 + 283)/2 = 180.5
Thus, the number halfway between 78 and 283 is 180.5.
To check that our answer is correct, we subtract 78 from 180.5 and subtract 180.5 from 283 and compare the two numbers:
180.5 - 78 = 102.5
283 - 180.5 = 102.5
As you can see, the halfway number is 102.5 higher than 78 and 102.5 lower than 283. Therefore, our halfway between answer of 180.5 above is correct.
Halfway Between
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Halfway Between 78 and 284
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