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:2024/11/27 17:44:57
x){ީ5<ٷźM0;<^Ks &H8v6$
U@El5]CMta0R(D( -,- lK?]e{i6yvPGۀ9@iALԲS0[,m 5d2楉[Lӈ8 0;
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!