When you ask "What number is halfway between 77 and 233?" 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=233.
To find the number halfway between 77 and 233, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 77 and 233 into our formula, we get:
(77 + 233)/2 = 155
Thus, the number halfway between 77 and 233 is 155.
To check that our answer is correct, we subtract 77 from 155 and subtract 155 from 233 and compare the two numbers:
155 - 77 = 78
233 - 155 = 78
As you can see, the halfway number is 78 higher than 77 and 78 lower than 233. Therefore, our halfway between answer of 155 above is correct.
Halfway Between
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Halfway Between 77 and 234
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