Move the numbers to the lines to order them from least to greatest. least
greatest
0.85
0.2
0.9
0.31

Step-by-step explanation:

          To put these numbers in order, you have to fill zeros in where there is no number.

               Ex: 0.85                   0.2

                     0.20          =       0.31

                     0.90                   0.85

                     0.31                    0.90

Now that I've lined the numbers up and add zeros were necessary you can easily see which numbers are greater and which ones are less.

* Remember you should always put the numbers as instructed in their original form.