Ответ:

  1. \(2,4:1000=0,002\).
  2. \(3,6:18=0,2\).
  3. \(3:2=1,5\).
  4. \(0,7:2=0,35\).
  5. \(31:10=3,1\).
  6. \(3\cdot0,17=0,51\).
  7. \(0,04\cdot100=4\).
  8. \(4\frac{2}{5}+0,2=4,4+0,2=4,6\).
  9. \(-3,2\cdot\frac{3}{4}=-2,4\).
  10. \(6\frac{4}{7}-2,1=\frac{46}{7}-\frac{21}{10}=\frac{313}{70}=4\frac{33}{70}\).
  11. \(-0,3\cdot\left(-\frac{2}{5}\right)=0,12\).
  12. \(\frac{6}{25}-0,06=0,24-0,06=0,18\).
  13. \(3,5:\frac{3}{5}=3,5\cdot\frac{5}{3}=\frac{35}{6}=5\frac{5}{6}\).
  14. \(-2,5-3,045=-5,545\).