When you ask "What number is halfway between 68 and 177?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=68 and Y=177.
To find the number halfway between 68 and 177, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 68 and 177 into our formula, we get:
(68 + 177)/2 = 122.5
Thus, the number halfway between 68 and 177 is 122.5.
To check that our answer is correct, we subtract 68 from 122.5 and subtract 122.5 from 177 and compare the two numbers:
122.5 - 68 = 54.5
177 - 122.5 = 54.5
As you can see, the halfway number is 54.5 higher than 68 and 54.5 lower than 177. Therefore, our halfway between answer of 122.5 above is correct.
Halfway Between
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Halfway Between 68 and 178
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