Ответ:

  1. \(400 - (60 + 50) + (29 - 9) = 400 - 110 + 20 = 310\).
  2. \(100 : (90 - 80) \times 7 = 100 : 10 \times 7 = 70\).
  3. \(0 \times 9 + 15 = 0 + 15 = 15\).
  4. \(0 \times (18 : 6) = 0 \times 3 = 0\).
  5. \(65 : 5 \times 4 = 13 \times 4 = 52\).
  6. \(90 : 90 \times 1 = 1 \times 1 = 1\).

Ответ: 310; 70; 15; 0; 52; 1.