When you ask "What number is halfway between 34 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=34 and Y=278.
To find the number halfway between 34 and 278, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 34 and 278 into our formula, we get:
(34 + 278)/2 = 156
Thus, the number halfway between 34 and 278 is 156.
To check that our answer is correct, we subtract 34 from 156 and subtract 156 from 278 and compare the two numbers:
156 - 34 = 122
278 - 156 = 122
As you can see, the halfway number is 122 higher than 34 and 122 lower than 278. Therefore, our halfway between answer of 156 above is correct.
Halfway Between
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Halfway Between 34 and 279
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