When you ask "What number is halfway between 1 and 276?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=1 and Y=276.
To find the number halfway between 1 and 276, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 1 and 276 into our formula, we get:
(1 + 276)/2 = 138.5
Thus, the number halfway between 1 and 276 is 138.5.
To check that our answer is correct, we subtract 1 from 138.5 and subtract 138.5 from 276 and compare the two numbers:
138.5 - 1 = 137.5
276 - 138.5 = 137.5
As you can see, the halfway number is 137.5 higher than 1 and 137.5 lower than 276. Therefore, our halfway between answer of 138.5 above is correct.
Halfway Between
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Halfway Between 1 and 277
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