When you ask "What number is halfway between 68 and 187?" 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=187.
To find the number halfway between 68 and 187, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 68 and 187 into our formula, we get:
(68 + 187)/2 = 127.5
Thus, the number halfway between 68 and 187 is 127.5.
To check that our answer is correct, we subtract 68 from 127.5 and subtract 127.5 from 187 and compare the two numbers:
127.5 - 68 = 59.5
187 - 127.5 = 59.5
As you can see, the halfway number is 59.5 higher than 68 and 59.5 lower than 187. Therefore, our halfway between answer of 127.5 above is correct.
Halfway Between
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Halfway Between 68 and 188
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