如题所述
第1个回答 2019-09-14
103×20.5
=103×20+103×0.5
=2060+51.5
=2111.5
=103×20+103×0.5
=2060+51.5
=2111.5
第2个回答 2019-09-14
原式=(100+3)x20.5
=100x20.5+3x20.5
=2050+61.5
=2111.5
=100x20.5+3x20.5
=2050+61.5
=2111.5
第3个回答 2019-09-14
103x20.5
=103x(20+0.5)(乘法分配律)
=103x20+103x0.5
=2060+51.5
=2111.5本回答被网友采纳
=103x(20+0.5)(乘法分配律)
=103x20+103x0.5
=2060+51.5
=2111.5本回答被网友采纳
第4个回答 2019-09-14
103x37
=(100+3)x37
=100x37+3x37
=3700+111
=3811
=(100+3)x37
=100x37+3x37
=3700+111
=3811