5.4/0.45 ("/"代表除号),请简便计算

来源:学生作业学帮网 编辑:学帮网 时间:2024/06/02 05:36:12

5.4/0.45 ("/"代表除号),请简便计算

5.4÷0.45
=(0.9x6)÷(0.9x0.5)
=6÷0.5
=12

5.4/0.45
=540/45
=45*12/45
=12

=5.4/0.9*2
=6*2
=12

原式=(0.9x6)/(0.9x0.5)
=(6/0.5)
=12