Switch between the three forms
Any answer can be shown in three forms. Press 
, type 1.65, and press 
: 1.65. Press 
for the mixed fraction: 1┌13┌20. Press 
and 
for the improper fraction: 33┌20. Press again to return to the decimal: 1.65. That is the end of Part 3. In Part 4, we look at number bases, degrees, minutes and seconds, and coordinates.