Ответ:

  1. 67 × 2 = 134.
  2. 86 × 2 = 172.
  3. 54 × 3 = 162.
  4. 75 × 3 = 225.
  5. 29 × 4 = 116.
  6. 48 × 4 = 192.
  7. 57 × 5 = 285.
  8. 69 × 5 = 345.
  9. 34 × 6 = 204.
  10. 56 × 6 = 336.
  11. 78 × 7 = 546.
  12. 89 × 7 = 623.