59×51的简便算法
第1个回答 2016-11-13
应该是
59×51
=(60-1)×51
=60×51-51
=60×(50+1)-51
=60×50+60-51
=3000+(60-51)
=3000+9
=3009本回答被网友采纳
59×51
=(60-1)×51
=60×51-51
=60×(50+1)-51
=60×50+60-51
=3000+(60-51)
=3000+9
=3009本回答被网友采纳
第2个回答 2016-11-13
59x51
=(60-1)x(50+1)
=3000+60-50-1
=3000+9
=3009
=(60-1)x(50+1)
=3000+60-50-1
=3000+9
=3009