When you ask "What number is halfway between 97 and 664?" we assume you mean the number in the exact middle of the two numbers on a number line, as illustrated below, where X=97 and Y=664.
To find the number halfway between 97 and 664, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 97 and 664 into our formula, we get:
(97 + 664)/2 = 380.5
Thus, the number halfway between 97 and 664 is 380.5.
To check that our answer is correct, we subtract 97 from 380.5 and subtract 380.5 from 664 and compare the two numbers:
380.5 - 97 = 283.5
664 - 380.5 = 283.5
As you can see, the halfway number is 283.5 higher than 97 and 283.5 lower than 664. Therefore, our halfway between answer of 380.5 above is correct.
Halfway Between
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Halfway Between 97 and 665
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