1) 90:30 = 3
2) 80:40 = 2
3) 5*20-16 = 100-16 = 84
4) 74-60:2 = 74-30 = 44
5) 7*(42-34) = 7*8 = 56
6) (36+36):9 = 72:9 = 8
1) 90:30 = 3
2) 80:40 = 2
3) 5*20-16 = 100-16 = 84
4) 74-60:2 = 74-30 = 44
5) 7*(42-34) = 7*8 = 56
6) (36+36):9 = 72:9 = 8