I'm not sure
30.09 . unless not tens but tenths is meant 3 tenths and 9 hundredths = 0.39
It is 0.4
It is 2590.
Four tens is 40.0 Four tenths is 0.4
30.0
I'm not sure
If you mean 3*10 and 9/100 then it is 30.09 as a decimal
15 tens = 150
30.09 . unless not tens but tenths is meant 3 tenths and 9 hundredths = 0.39
It is 0.4
6.6
3tens 2units 5 tenths = 32.5
259
It is 3.8
It is 230.
It is 2590.