6.15 in word form is "six and fifteen hundredths." This is because the number 6 is read as "six," the decimal point is read as "and," and the digits after the decimal point are read individually as "fifteen hundredths."
30.15
1.150 = one and fifteen hundredths
Two and fifteen hundredths. (I'm pretty sure)
fifteen hundredths. 30/200 = 15/100 = .15
To write twelve and fifteen hundredths as a decimal, you simply write the whole number part (12) followed by a decimal point and then the fractional part (15 hundredths). Therefore, twelve and fifteen hundredths is written as 12.15 in decimal notation.
2.15
0.15
4.15
0.15
Fifteen hundredths.
0.15
5.15
5.15
8.15
30.15
15/100 converted to a decimal is 0.15.