1/3, 1/9, 1/8,1/20 in order from least to greatest

Question

I need to put them in order from leas to greatest

Answer 1

1/20, 1/9, 1/8, 1/3

Notice that the numerator for all the fractions are 1.
Thus, we only need to focus on the denominator.
The bigger the denominator, the small the fraction.
Hence, we just need to rearrange from the biggest denominator to the smallest denominator (provided that the numerator are all the same).