57×99简便计算
问题描述:
57×99简便计算
答
57×99
=57×(100-1)
=57×100-57
=5700-57
=5700-60+3
=5643
答
57x(100-1)=57X100-57=5700-57=5643
答
57x99
=57x(100-1)
=57x100-57x1
=5700-57
=5643
答
(60-3)X(100-1)=60X100-60-300-3=5643
答
57x(100-1)=57x100-57x1=5643
答
57x99=57x(100-1)=5700-57=5643
答
57*99
=57*(100-1)
=5700-57
=5643
答
57×(100-1)=57*100-57=5643乘法分配律
答
57x99
=57x100-57
=5700-57
=5643
答
57X(100-1)=
57X100-57X1=
5700-57=5643
答
57×99
=57×(100-1)
=57×100-57×1
=5700-57
=5643