Ответ:
- \(7.3\cdot3=21.9\).
- \(6.35\cdot12=6.35\cdot(10+2)=63.5+12.7=76.2\).
- \(17\cdot1.07=18.19\).
- \(0.63\cdot5=3.15\).
- \(80.1\cdot9=720.9\).
- \(55.6\cdot11=55.6\cdot(10+1)=556+55.6=611.6\).
Ответ: 1) \(21.9\); 2) \(76.2\); 3) \(18.19\); 4) \(3.15\); 5) \(720.9\); 6) \(611.6\).
