237×198 求简便算法
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237×198求简便算法237×198求简便算法237×198求简便算法237×198=237x(200-2)=237x200-237x2=47400-474=46926237×198=237x(20
237×198 求简便算法
237×198 求简便算法
237×198 求简便算法
237×198
=237x(200-2)
=237x200-237x2
=47400-474
=46926
237×198 =237x(200-2)=47400-474=46926
237×198 =237x200-237x2=47400-474=47000-74=46926
237*198=(240-3)*(200-2)=48000-600-480+6=46926