We know the smallest number has to be [tex]\frac{3}{8}[/tex]. Why? Well, one way to see it is that [tex]\frac{1}{8} = .125[/tex] in decimal form, so [tex]\frac{3}{8} = .375[/tex]. But another way to see it, even it you don't remember the decimal form of [tex]\frac{1}{8}[/tex], is to notice that [tex]\frac{3}{8}[/tex] is less than [tex]\frac{4}{8} = \frac{1}{2}[/tex], and both of the other numbers are bigger than [tex]\frac{1}{2} = .5[/tex]!
Now, to order the other two numbers, you should remember that [tex]\frac{1}{5} = .2[/tex], so [tex]\frac{3}{5} = .6[/tex], which is less than [tex].625[/tex].
So, the order of the numbers from greatest to least is
[tex]\bf .625, \frac{3}{5}, \frac{3}{8}[/tex]
