与4:0.3能组成比例的是( )A.6:0.45 B.0.8:6 C.4:3
10×8的结果是( )A.80 B.100 C.60
10×6的结果是( )A.80 B.100 C.60
40+60的结果是( )A.80 B.100 C.60
20+70的结果是( )A.40 B.90 C.60
40+30的结果是( )A.70 B.50 C.60