When you ask "What number is halfway between 47 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=47 and Y=660.
To find the number halfway between 47 and 660, we use the following formula:
(X + Y)/2 = Halfway Between
When we enter 47 and 660 into our formula, we get:
(47 + 660)/2 = 353.5
Thus, the number halfway between 47 and 660 is 353.5.
To check that our answer is correct, we subtract 47 from 353.5 and subtract 353.5 from 660 and compare the two numbers:
353.5 - 47 = 306.5
660 - 353.5 = 306.5
As you can see, the halfway number is 306.5 higher than 47 and 306.5 lower than 660. Therefore, our halfway between answer of 353.5 above is correct.
Halfway Between
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