on a number line which is larger 0.6 or 0.675?
Try this:
When you subtract a smaller number from a larger you get a positive number. If you subtract a larger number from a smaller number, you get a negative number.
So as ThePerfectHacker suggested:
0.675 - 0.600 = 0.075
which is positive.
Thus
0.675 > 0.600
-Dan