9. 4.8, 24-12, 16:2, 5.3+7, 9:3, 32-16, 21:3, 3.8, 12:4, 15:3, 7+8, (35-10):5

4*8=32, 24-12=12, 16:2=8, 5*3+7=22, 9:3=3, 32-16=16, 21:3=7, 3*8=24, 12:4=3, 15:3=5, 7+8=15, (35-10):5=5.