List the numbers in least to greatest: 1/2,0.4,30%

1/2 = 0.5

30% = 0.3

30%, .4, 1/2

To list the numbers in least to greatest, we need to compare their values.

1/2 can be written as a decimal by dividing 1 by 2, which equals 0.5.

0.4 is already in decimal form.

30% can be converted to a decimal by dividing 30 by 100, which equals 0.3.

Now, let's compare the numbers:

0.4 < 0.5 < 0.3

So, when listed in least to greatest, the numbers are:

0.4, 1/2, 30%