Реши примеры.

Решение:

1. \( 20 + 30 + 6 - 10 + 22 = 68 \)
2. \( (10 \times 2 + 10 \times 3) : 5 = (20 + 30) : 5 = 50 : 5 = 10 \)
3. \( 28 - (18 - 14) + 13 = 28 - 4 + 13 = 24 + 13 = 37 \)
4. \( 7 \times 8 - 32 : 8 - 49 : 7 = 56 - 4 - 7 = 52 - 7 = 45 \)
5. \( 59 + 22 - 25 - 16 + 60 = 81 - 25 - 16 + 60 = 56 - 16 + 60 = 40 + 60 = 100 \)
6. \( 21 + 9 + (2 + 15) - 12 = 30 + 17 - 12 = 47 - 12 = 35 \)
7. \( (9 - 5) : (9 - 7) + 24 = 4 : 2 + 24 = 2 + 24 = 26 \)
8. \( 8 \times 2 - 16 + 3 \times 3 + 14 \times 2 = 16 - 16 + 9 + 28 = 0 + 9 + 28 = 37 \)
9. \( 35 - (1 + 2) \times 7 + 4 = 35 - 3 \times 7 + 4 = 35 - 21 + 4 = 14 + 4 = 18 \)
10. \( 35 + 47 + 18 - 62 = 82 + 18 - 62 = 100 - 62 = 38 \)
11. \( (12 : 4 + 20 : 4) : 2 + 22 = (3 + 5) : 2 + 22 = 8 : 2 + 22 = 4 + 22 = 26 \)
12. \( 56 : 7 + 5 \times 2 + 60 : 6 = 8 + 10 + 10 = 28 \)
13. \( 12 \times 5 + 1 \times 2 - 12 + 17 = 60 + 2 - 12 + 17 = 62 - 12 + 17 = 50 + 17 = 67 \)
14. \( 6 \times 5 - 8 \times 3 + 14 : 2 = 30 - 24 + 7 = 6 + 7 = 13 \)
15. \( 8 : 4 - 10 : 5 + 31 - 12 = 2 - 2 + 31 - 12 = 0 + 31 - 12 = 19 \)
16. \( 15 - 8 + 2 + 11 + (11 \times 5) = 15 - 8 + 2 + 11 + 55 = 7 + 2 + 11 + 55 = 9 + 11 + 55 = 20 + 55 = 75 \)
17. \( 18 : 9 + 7 \times 6 + 22 : 11 = 2 + 42 + 2 = 44 + 2 = 46 \)
18. \( 90 - 40 - 20 - 20 = 50 - 20 - 20 = 30 - 20 = 10 \)
19. \( (30 : 3 + 8 \times 5) : 5 = (10 + 40) : 5 = 50 : 5 = 10 \)
20. \( 100 - 9 \times 9 - 16 : 8 = 100 - 81 - 2 = 19 - 2 = 17 \)
21. \( 40 : 4 - 21 : 3 + 3 \times 3 = 10 - 7 + 9 = 3 + 9 = 12 \)

Ответ: 68, 10, 37, 45, 100, 35, 26, 37, 18, 38, 26, 28, 67, 13, 19, 75, 46, 10, 10, 17, 12.