1. 直接写出得数。                                                                                                                                      

1.6÷0.8=	0.15×0.3=	2.8÷0.7=	3.9÷3.9=
3.2×0.4=	9÷0.3=	3.2÷0.08=	0×4.6=
4.2÷1.4=	43÷0.01=	0.12×7=	0.45÷3=