When you ask "What number is halfway between 97 and 660?" 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=660.
To find the number halfway between 97 and 660, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 97 and 660 into our formula, we get:
(97 + 660)/2 = 378.5
Thus, the number halfway between 97 and 660 is 378.5.
To check that our answer is correct, we subtract 97 from 378.5 and subtract 378.5 from 660 and compare the two numbers:
378.5 - 97 = 281.5
660 - 378.5 = 281.5
As you can see, the halfway number is 281.5 higher than 97 and 281.5 lower than 660. Therefore, our halfway between answer of 378.5 above is correct.
Halfway Between
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