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27x98简便方法

简便计算 27x98=27x98==27*(100-2)=27*100-27*2=2700-54=2646

27272756456

27x98+54 =27x98+2*27 =27*(98+2) =2700

27*98简便计算=27x(100-2)=27x100-27x2=2700-54=2646

=13x98+13x2=13x(98+2)=13x100=1300

这么简单

27X98+27X2=27X(98+2)=27X100=2700

28*98+56 =28*(98+2) =28*100 =2800 你好,本题已解答,如果满意 请点右下角“采纳答案”.

0.78X98简便算=0.78*(100-2)=0.78*100-0.78*2=78-1.56=76.44

127-98=127-(100-2)=127-100+2=29

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