Решение:
- \( (19 + 81) - 13 = 100 - 13 = 87 \)
- \( (48 - 32) + (48 + 32) = 16 + 80 = 96 \)
- \( (60 : 4) : 3 = 15 : 3 = 5 \)
- \( (289 + 458) - (623 - 589) = 747 - 34 = 713 \)
- \( 256 + (58 \times 9) = 256 + 522 = 778 \)
- \( 380 - (27 \times 8) = 380 - 216 = 164 \)
Ответ: 87, 96, 5, 713, 778, 164.