When you ask "What number is halfway between 77 and 306?" 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=306.
To find the number halfway between 77 and 306, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 77 and 306 into our formula, we get:
(77 + 306)/2 = 191.5
Thus, the number halfway between 77 and 306 is 191.5.
To check that our answer is correct, we subtract 77 from 191.5 and subtract 191.5 from 306 and compare the two numbers:
191.5 - 77 = 114.5
306 - 191.5 = 114.5
As you can see, the halfway number is 114.5 higher than 77 and 114.5 lower than 306. Therefore, our halfway between answer of 191.5 above is correct.
Halfway Between
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Halfway Between 77 and 307
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