425-228+375-172=?简便运算
来源:学生学帮网 编辑:学帮网 时间:2024/05/29 06:21:24
425-228+375-172=?简便运算
425-228+375-172
=425+375-228-172
=425+375-(228+172)
=800-400
=400
425+375-(228+172)
=800-400
=400
425-228+375-172=?简便运算
425-228+375-172
=425+375-228-172
=425+375-(228+172)
=800-400
=400
425+375-(228+172)
=800-400
=400