如何简便计算:986×89-987×88
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/05 16:34:29
![如何简便计算:986×89-987×88](/uploads/image/z/360554-50-4.jpg?t=%E5%A6%82%E4%BD%95%E7%AE%80%E4%BE%BF%E8%AE%A1%E7%AE%97%3A986%C3%9789%EF%BC%8D987%C3%9788)
如何简便计算:986×89-987×88
如何简便计算:986×89-987×88
如何简便计算:986×89-987×88
986x89-987x88
=(987-1)x89-987x88
=987x89-89-987x88
=987x89-987x88-89
=987-89
=898
希望大家采取!
986*89-987*88=987*89-89-987*89+987=987-89=898
986x89-987x88
=(987-1)x89-987x88
=987x89-89-987x88
=987x89-987x88-89
=987-89
=898
呵呵,希望大家采取!