When you ask "What number is halfway between 77 and 268?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=77 and Y=268.
To find the number halfway between 77 and 268, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 77 and 268 into our formula, we get:
(77 + 268)/2 = 172.5
Thus, the number halfway between 77 and 268 is 172.5.
To check that our answer is correct, we subtract 77 from 172.5 and subtract 172.5 from 268 and compare the two numbers:
172.5 - 77 = 95.5
268 - 172.5 = 95.5
As you can see, the halfway number is 95.5 higher than 77 and 95.5 lower than 268. Therefore, our halfway between answer of 172.5 above is correct.
Halfway Between
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Halfway Between 77 and 269
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