Question

口算 1.6÷0.4=	0.77×1=	7.5÷3=	1.5×6=
0.125×8=	31.4÷3.14=	1.4×10=	0.1×6.4=
3.6×0.2=	1.5÷1.5=	2.8÷0.4=	2.3+1.8=
10÷0.1=	4.16÷1=	0.45×0.1=	0.2×11=
3.6÷2=	1.2÷0.02=	72÷0.9=	25×0.4=

Answer 1

分析：據(jù)小數(shù)加、減、乘、除法的計(jì)算法則計(jì)算即可．

解答：解：

1.6÷0.4=4	0.77×1=0.77	7.5÷3=2.5	1.5×6=9
0.125×8=1	31.4÷3.14=10	1.4×10=14	0.1×6.4=0.64
3.6×0.2=0.72	1.5÷1.5=1	2.8÷0.4=7	2.3+1.8=4.1
10÷0.1=100	4.16÷1=4.16	0.45×0.1=0.045	0.2×11=2.2
3.6÷2=1.8	1.2÷0.02=60	72÷0.9=80	25×0.4=10

點(diǎn)評：完成本題要細(xì)心，注意計(jì)算過程中小數(shù)點(diǎn)位置的變化．