Trouve les nombres manquants :

15 : 5 = .....6 × 7 = .....
35 - 14 = .....24 + ..... = 40
23 + 7 = .......... - 7 = 3
4 - ..... = 34 × ..... = 16
6 × 10 = .....11 + ..... = 24
23 + 16 = .......... - 18 = 22
..... + 11 = 2810 × ..... = 50
21 + ..... = 31..... + 6 = 12
10 - ..... = 5..... × 2 = 22
11 - ..... = 338 - 18 = .....