20.7
The decimal point in three and seven-tenths goes after the whole number 3 and before the 7 tenths.
It is 12.3
1.3
1.7
Parts of a number like 3 tenths always go on the right side of the decimal point. Whole numbers go on the left side of the decimal point 3 tenths = .3
You put the digit right after the decimal. For example, if you want to say 91 and 7tenths, you would show it like this:91.7 The tenths would go right after the decimal.
decimal form of 10 tenths = 1.010 tenths in decimal = 1
decimal for eighth tenths = 0.8
two- tenths = 0.2 in decimal
.207
12 tenths as a decimal is 1.2
38 tenths in decimal = 3.8