Express 9.58 as a mixed number.

We can push the nine to the side and work on the fraction. 0.58 easily turns into 58/100 (because 58 hundredths,)

Now, it can be 9 58/100, but we need to simplify it

The greatest common factor is 2. So we divide the numerator and denominator by 2.

58/2 = 29

100/2 = 50

So, your final answer is 9 29/100