Ответ:
а) \(35{,}5:5=7{,}1\); \(3{,}9:2=1{,}95\); \(6{,}3:10=0{,}63\); \(0{,}64:8=0{,}08\); \(0{,}7:100=0{,}007\).
б) \(11\cdot0{,}2=2{,}2\); \(1\cdot0{,}1=0{,}1\); \(39\cdot0{,}01=0{,}39\); \(31\cdot0{,}4=12{,}4\); \(0{,}5\cdot48=24\).
в) \(0{,}7:5=0{,}14\); \(7:2=3{,}5\); \(23{,}23:23=1{,}01\); \(25{,}75:25=1{,}03\); \(0{,}9:18=0{,}05\).
г) \(6{,}7-2{,}3=4{,}4\); \(6-0{,}02=5{,}98\); \(3{,}08+0{,}2=3{,}28\); \(2{,}54+0{,}06=2{,}6\); \(8{,}2-2{,}2=6\).
