When you ask "What number is halfway between 77 and 168?" 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=168.
To find the number halfway between 77 and 168, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 77 and 168 into our formula, we get:
(77 + 168)/2 = 122.5
Thus, the number halfway between 77 and 168 is 122.5.
To check that our answer is correct, we subtract 77 from 122.5 and subtract 122.5 from 168 and compare the two numbers:
122.5 - 77 = 45.5
168 - 122.5 = 45.5
As you can see, the halfway number is 45.5 higher than 77 and 45.5 lower than 168. Therefore, our halfway between answer of 122.5 above is correct.
Halfway Between
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Halfway Between 77 and 169
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