如题所述
第1个回答 2020-03-06
102x210简便算法
=100x210十2x210
=21000+420
=21420
=100x210十2x210
=21000+420
=21420
第2个回答 2020-03-06
解：（100+2）*210=100*210+2*210=21000+420+21420
第3个回答 2020-03-06
102x210
=(100+2)x210
=21000+420
=21420本回答被网友采纳
=(100+2)x210
=21000+420
=21420本回答被网友采纳
第4个回答 2020-03-06
102x210
=(100+2)x210
=100x210+2x210
=21000+420
=21420
=(100+2)x210
=100x210+2x210
=21000+420
=21420
第5个回答 2020-03-06
102X210
=(100+2)X210
二100X210十2X210
=21000十420
=21420
=(100+2)X210
二100X210十2X210
=21000十420
=21420
