75×21+25×37用简便算法怎末算

来源：学生作业帮助网编辑：作业帮时间：2024/04/29 23:47:20

75×21+25×37用简便算法怎末算
75×21+25×37用简便算法怎末算

75×21+25×37用简便算法怎末算
75×21+25×37
=(100-25)×21+25×37
=100×21+25×21+25×37
=100×21+(37-21)×25
=2100+16×25
=2100+4×4×25
=2100+4×100
=2100+400
=2500

=25*3*21+25*37=25(63+37)=2500

75*21+25*37=25*3*21+25*37=25*(63+37)=2500

75×21+25×37用简便算法怎末算能用简便算法就用简便算法 25+75-25+75的简便算法 75*23+19*25的简便算法简便算法75×27+19×25=? 75*4.7+15.9*25的简便算法 75*4.7+15.9*25的简便算法 7437/37简便算法 21除以1.25用简便算法计算 75* 24简便算法 0.075×350+0.65×75用简便算法0.888×1.6-0.222×2.4用简便算法0.075×350+0.65×75用简便算法0.888×1.6-0.222×2.4用简便算法用简便算法怎么算25x32 25*24简便算法简便算法25*64 25×88简便算法用简便算法用简便算法做用简便算法