38-___:___=30
85-___:___=80
60-___:___=57
80-___:___=71
___-___*4=40
___-___*___=0
___+___:___=10
___+___:___=18
___+___:5=12
___:___+5=12
5*___+___=12
___*___-15=13

38-16:2=3085-15:3=8060-12:4=5780-90:10=71(20-10)•4=40(45-16)•0=07+30:10=1017+ 6:6=189+15:5=1249:7+5=125•2+2=1214•2-15=13