Arrange the following decimals in order of size: 0.45, 1.09, 0.3, 0.08

There are 5 steps you can follow to make this sort of problem easier to handle:

1) Line up all of the values in a column with the decimal points under each other 

2) Ensure each value is the same length by filling in zeros

3) Ignore the decimal points and look at the values as if they were all whole numbers

4) Arrange in order of size

5) Put the decimal points and zeros at the front, back in

This would look like:

1-2) 0.45

       1.09

       0.30

       0.08

3) 45

   109

    30

    8

4) 8

    30

    45

    109

5) 0.08

    0.30

    0.45

    1.09

Step 5 shows the correct answer in ascending order from the smallest value at the top to the largest value at the bottom.