Trouve les nombres manquants :

19 - 11 = .......... + 6 = 22
..... : 5 = 824 + 14 = .....
15 + 15 = .....24 + ..... = 39
18 - 5 = .....4 + 2 = .....
..... + 16 = 17..... × 7 = 49
17 + 4 = .......... : 1 = 8
..... × 8 = 808 : 2 = .....
13 + 10 = .......... : 3 = 11
..... + 15 = 312 + ..... = 8
..... + 15 = 198 × ..... = 24