Answer :

ScienceEllis
3 9/100 would be written as a decimal like this, 3.09. You say three and nine one hundredths. The 9 has to be in the hundredths place, so you put a 0 in front of it. And since the 3 is hole, you put it in front of the decimal point.
[tex](3*100)+9[/tex]

[tex] \frac{309}{100} =3.09 [/tex]