20.7
The decimal point in three and seven-tenths goes after the whole number 3 and before the 7 tenths.
1.3
It is 12.3
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
two- tenths = 0.2 in decimal
decimal for eighth tenths = 0.8
.207
The first numeral to the right of the decimal is the tenths' place.
three tenths as a decimal = 0.3