To subtract 6 tenths from 2 tenths, regroup 1 tenths from the units column. 2 tenths increases to 12 tenths and 1 in the units column decreases by 1. Subtract 6 tenths from 12 tenths to get 6 in the tenths column and 0 in the units column. Therefore, the difference of 1.2 and 0.6 is 0.6. To subtract 6 hundredths from 2 hundredths, regroup 1 tenths from the units column. 2 tenths increases to 3 tenths and 1 in the units column decreases by 1. what apply