78×78+78×23-78简算
来源:学生学帮网 编辑:学帮网 时间:2024/06/16 17:40:08
78×78+78×23-78简算
78×78+78×23-78
=78×(78+23-1)
=78×100
=7800
78×78+78×23-78
=78×﹙78+23-1)
=78×100
=7800
78×78+78×23-78简算
78×78+78×23-78
=78×(78+23-1)
=78×100
=7800
78×78+78×23-78
=78×﹙78+23-1)
=78×100
=7800