19. 47 + 24 39 + 53 82 - 43 51 - 27 100 - 23 100 - 9 67 + 33 15 + 85

Решение:

1. 47 + 24 = 71
2. 39 + 53 = 92
3. 82 - 43 = 39
4. 51 - 27 = 24
5. 100 - 23 = 77
6. 100 - 9 = 91
7. 67 + 33 = 100
8. 15 + 85 = 100

Ответ: 71, 92, 39, 24, 77, 91, 100, 100