When you ask "What number is halfway between 73 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=73 and Y=278.
To find the number halfway between 73 and 278, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 73 and 278 into our formula, we get:
(73 + 278)/2 = 175.5
Thus, the number halfway between 73 and 278 is 175.5.
To check that our answer is correct, we subtract 73 from 175.5 and subtract 175.5 from 278 and compare the two numbers:
175.5 - 73 = 102.5
278 - 175.5 = 102.5
As you can see, the halfway number is 102.5 higher than 73 and 102.5 lower than 278. Therefore, our halfway between answer of 175.5 above is correct.
Halfway Between
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Halfway Between 73 and 279
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