5. Выполни сложение.

Решение:

1. \( (74 + 6) + 7 = 80 + 7 = 87 \)
2. \( (27 + 3) + 5 = 30 + 5 = 35 \)
3. \( (55 + 5) + 8 = 60 + 8 = 68 \)
4. \( (32 + 8) + 4 = 40 + 4 = 44 \)
5. \( (46 + 4) + 2 = 50 + 2 = 52 \)
6. \( (61 + 9) + 6 = 70 + 6 = 76 \)
7. \( (83 + 7) + 9 = 90 + 9 = 99 \)
8. \( (38 + 2) + 3 = 40 + 3 = 43 \)

Ответ: 87, 35, 68, 44, 52, 76, 99, 43.