Ответ:

  1. \(0,75+2,48=3,23\).
  2. \(11,27+3,35=14,62\).
  3. \(1,24+34,11=35,35\).
  4. \(13,19+0,817=14,007\).
  5. \(0,7\cdot0,12=0,084\).
  6. \(1,4\cdot0,8=1,12\).
  7. \(11,3\cdot0,3=3,39\).

Ответ: 3,23; 14,62; 35,35; 14,007; 0,084; 1,12; 3,39.