Put these in order of size, smallest first:

0.4, 60%, 1/2

0.4>0.5>0.6 it's really really really easy.

0.4>1/2>60%

Convert to decimal

0.4 is already deccimal

percent menas parts out of 100

so 60%=60/100=6/10=0.6/1=0.6

0.6

1/2=50/100=5/10=0.5/1=0.5

so the numbers are 0.4 0.6 and 0.5

so the order from smalles to largestst is

0.4, 0.5, 0.6 so translate back

0.4, 1/2, 60%