51.2
It is 3.2
.80
0.4 = four tenths 0.02 = two hundredths 0.42 = four tenths and two hundredths
22.5
3.2
Two and five tenths or two and one half.
The tenths place in decimals is the first digit to the right of the decimal point. For example, 15.2 is fifteen and two tenths.
264.7
2/10 and 7/10 as decimals are 0.2 and 0.7 respectively
Six-tenths in decimals is 0.6
47 tenths is 4.7