When you ask "What number is halfway between 17 and 667?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=17 and Y=667.
To find the number halfway between 17 and 667, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 17 and 667 into our formula, we get:
(17 + 667)/2 = 342
Thus, the number halfway between 17 and 667 is 342.
To check that our answer is correct, we subtract 17 from 342 and subtract 342 from 667 and compare the two numbers:
342 - 17 = 325
667 - 342 = 325
As you can see, the halfway number is 325 higher than 17 and 325 lower than 667. Therefore, our halfway between answer of 342 above is correct.
Halfway Between
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Halfway Between 17 and 668
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