Introduction
In this interview, Ricardo shows that he thinks 9 tenths is larger than 98 hundredths. He knows that 3.9 is the largest one decimal place number he can make and that 3.98 is the largest two decimal place number, but he thinks all amounts of tenths are larger than all amounts of hundredths. He has no difficulty selecting 3.01 as the smallest number, as is predicted from his misconception.