When you ask "What number is halfway between 49 and 678?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=49 and Y=678.
To find the number halfway between 49 and 678, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 49 and 678 into our formula, we get:
(49 + 678)/2 = 363.5
Thus, the number halfway between 49 and 678 is 363.5.
To check that our answer is correct, we subtract 49 from 363.5 and subtract 363.5 from 678 and compare the two numbers:
363.5 - 49 = 314.5
678 - 363.5 = 314.5
As you can see, the halfway number is 314.5 higher than 49 and 314.5 lower than 678. Therefore, our halfway between answer of 363.5 above is correct.
Halfway Between
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Halfway Between 49 and 679
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