42.5*99+42.5*2-42.5怎样简便计算

来源:学生作业帮助网 编辑:作业帮 时间:2024/05/15 13:09:44

42.5*99+42.5*2-42.5怎样简便计算
42.5*99+42.5*2-42.5怎样简便计算

42.5*99+42.5*2-42.5怎样简便计算
42.5*99+42.5*2-42.5
=42.5*(99+2-1)
=42.5*100
=4250

42.5*99+42.5*2-42.5
=42.5*(99+2-1)
=42.5*100
=4250

42.5*99+42.5*2-42.5
=42.5*(99+2-1)
=42.5*100
=4250

42.5*99+42.5*2-42.5=42.5*(99+2-1)=42.5*100=4250

42.5*99+42.5*2-42.5
=42.5*(99+2-1)
=42.5*100
=4250

=42.5*(99+2-1)
=42.5*100
=4250

=42.5X(99+2-1)
=42.5X100
=4250
一定对