来自连永君的问题
下面各题怎样算简便就怎样算13.65÷0.25÷628.98÷6.3-3.154.8-4.8÷1.686.4÷0.24+401.4÷3.5×0.44.5×1.2-3.15÷15.
下面各题怎样算简便就怎样算
13.65÷0.25÷628.98÷6.3-3.154.8-4.8÷1.686.4÷0.24+401.4÷3.5×0.44.5×1.2-3.15÷15.


下面各题怎样算简便就怎样算13.65÷0.25÷628.98÷6.3-3.154.8-4.8÷1.686.4÷0.24+401.4÷3.5×0.44.5×1.2-3.15÷15.
下面各题怎样算简便就怎样算
13.65÷0.25÷628.98÷6.3-3.154.8-4.8÷1.686.4÷0.24+401.4÷3.5×0.44.5×1.2-3.15÷15.
(1)13.65÷0.25÷6
=13.65÷(0.25×6)
=13.65÷1.5
=9.1
(2)28.98÷6.3-3.15
=4.6-3.15
=1.45
(3)4.8-4.8÷1.6
=4.8-3
=1.8
(4)86.4÷0.24+40
=360+40
=400
(5)1.4÷3.5×0.4
=0.4×0.4
=0.16
(6)4.5×1.2-3.15÷15
=5.4-0.21
=5.19