a).12/4=12:4=3 0/5=0:5=0 9/3=9:3=3 b).50/5=50:5=10 44/4=44:4=11 11/1=11:1=11 1/1=1:1=1 c).6/1=6:1=6 10/10=10:10=1 72/9=72:9=8 0/45=0:45=0