As all the given numbers are negative, you ordered it by following the next:
If a number with a negative sign (a) is greater than other number with a negative sign (b), number -a goes more on the left on a numbered line than number -b; then -a is less than -b
-a is further from 0 than -b
The given numbers ordered from least to greater are:
-1.5, -1.05, -0.5, -0.05, -0.005