When you ask "What number is halfway between 68 and 427?" 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=427.
To find the number halfway between 68 and 427, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 68 and 427 into our formula, we get:
(68 + 427)/2 = 247.5
Thus, the number halfway between 68 and 427 is 247.5.
To check that our answer is correct, we subtract 68 from 247.5 and subtract 247.5 from 427 and compare the two numbers:
247.5 - 68 = 179.5
427 - 247.5 = 179.5
As you can see, the halfway number is 179.5 higher than 68 and 179.5 lower than 427. Therefore, our halfway between answer of 247.5 above is correct.
Halfway Between
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Halfway Between 68 and 428
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