It is 6.4
Expressed as a decimal fraction, sixty and four-tenths can be written 60.4.
669.4 = six hundred sixty-nine and four tenths.
9.4 is how you write nine and four tenths as a decimal
sixty and four hundredths = 60.04 in decimal
Sixty and four tenths can be written as 60.4, or 60.4 followed by a number of zeroes, depending upon the precision needed.
Sixty and four hundredths in a decimal form is 60.04
Eight and four tenths in decimal form = 8.4
Four and three tenths is 4.3