Put this fractions from shortest to longest 1/2,0.4,2/3,1.04?

Do you mean smallest to largest?

Change the fractions to decimals.

To put these fractions in order from shortest to longest, we need to convert all of them into a common format, such as decimals.

1/2 can be written as 0.5.
2/3 is approximately equal to 0.67.
1.04 remains the same.

Now let's put them in order from shortest to longest:
0.4 < 0.5 < 0.67 < 1.04

Therefore, the correct order is: 0.4, 0.5, 0.67, 1.04.

To compare fractions and decimals and put them in order from shortest to longest, you need to convert all the numbers to either fractions or decimals. Let's convert the given numbers to decimals:

1/2 = 0.5
2/3 = 0.666...
1.04 = 1.04
0.4 = 0.4

Now that we have them all as decimals, we can simply compare them:

0.4 < 0.5 < 0.666... < 1.04

Therefore, the numbers from shortest to longest are:

0.4, 0.5, 0.666..., 1.04