简便计算72*99

来源:学生作业学帮网 编辑:学帮网 时间:2024/05/14 13:45:25

简便计算72*99

72*99
=72×(100-1)
=72×100-1×72
=7200-72
=7128

72x99
=72x100-72
=7200-72
=7128

72x99
=7200-72
=7128