Six point four. Six and four tenths.
4+0.6 Four and six tenths
Six hundred and four tenths
4000.6
6,400,006.6
Depends on how you want to say it. Four-point-six; four and six tenths...
Six point four. Six and four tenths.
4+0.6 Four and six tenths
Four and six tenths.
4,000,000,000.6
It is 6.4
Four and six tenths.
Six hundred and four tenths
46 = forty-six
Four hundred thirty-two and six tenths.
Fifty-six and four tenths
4000.6