简便计算下面各题.99/47×975/1×27+5/3×41

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简便计算下面各题.99/47×975/1×27+5/3×41简便计算下面各题.99/47×975/1×27+5/3×41简便计算下面各题.99/47×975/1×27+5/3×41题打错了吧?(1)4

简便计算下面各题.99/47×975/1×27+5/3×41
简便计算下面各题.
99/47×97
5/1×27+5/3×41

简便计算下面各题.99/47×975/1×27+5/3×41
题打错了吧?
(1)47/99×97
=47/99×(99-2)
=47/99×99-47/99×2
=47-94/99
=46又5/99
(2)1/5×27+3/5×41
=1/5×27+1/5×(3×41)
=1/5×(27+123)
=1/5×150
=30