When you ask "What number is halfway between 49 and 278?" 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=278.
To find the number halfway between 49 and 278, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 49 and 278 into our formula, we get:
(49 + 278)/2 = 163.5
Thus, the number halfway between 49 and 278 is 163.5.
To check that our answer is correct, we subtract 49 from 163.5 and subtract 163.5 from 278 and compare the two numbers:
163.5 - 49 = 114.5
278 - 163.5 = 114.5
As you can see, the halfway number is 114.5 higher than 49 and 114.5 lower than 278. Therefore, our halfway between answer of 163.5 above is correct.
Halfway Between
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Halfway Between 49 and 279
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