100 of them.
10*3/100 = 30/100.
There are 10 hundredths in a tenth, and 10 tenths in a hundredth. Therefore, there are 100 hundredths in a thousandth. This can be calculated by multiplying 10 (hundredths in a tenth) by 10 (tenths in a hundredth), resulting in 100 hundredths in a thousandth.
10
10
10
10
10 x 0.03 = 0.30
There are one hundred "hundredths" in one whole.
There are 90 hundredths in 0.9 90
There are 10/100 = 0.1 which is the same as 0.10
The zero is in the hundredths place.
10