Trouve les nombres manquants :

..... + 21 = 21..... × 6 = 12
24 - 10 = .....1 × ..... = 11
22 - 4 = .....1 + 10 = .....
45 - ..... = 2310 × 6 = .....
..... - 21 = 1443 - 22 = .....
4 + 12 = .......... - 2 = 21
..... + 21 = 31..... + 22 = 29
35 - ..... = 1815 + 18 = .....
21 + 4 = .....0 + ..... = 6
19 + 22 = .......... - 12 = 7