b) 12 : 4 32 : 4 35 : 5

b)

           $\begin{array}{l}\begin{array}{c}12\\ \underset{¯}{12}\end{array}\begin{array}{c}4\\ 3\end{array}\\ 0\end{array}$                                   $\begin{array}{l}\begin{array}{c}32\\ \underset{¯}{32}\end{array}\begin{array}{c}4\\ 8\end{array}\\ 0\end{array}$                         $\begin{array}{l}\begin{array}{c}35\\ \underset{¯}{35}\end{array}\begin{array}{c}5\\ 7\end{array}\\ 0\end{array}$

12 : 4 = 3                                   32 : 4 = 8                         35 : 5 = 7