Ответ:

  1. \(5.7\cdot4.2=23.94\)
  2. \(9.7\cdot8.27=80.219\)
  3. \(0.38\cdot4.7=1.786\)
  4. \(0.035\cdot0.24=0.0084\)

Ответ: 23,94; 80,219; 1,786; 0,0084.