Ответ:

  1. \(42\cdot7\cdot8=2352\);
  2. \(60\cdot5\cdot10=3000\);
  3. \(630:9\cdot3=210\);
  4. \(72:8\cdot3=27\);
  5. \(44:4\cdot2=22\);
  6. \(360:4:3=30\);
  7. \(12\cdot3:9=4\);
  8. \(46:2\cdot3=69\);
  9. \(280:4:7=10\).