题目

根据运算定律填空。                                                                               (1) (53+17)×3=×+×                                                         (2) 18×54+18×46=(+)×                                                                  (3) 82×99+82=(+)×82                                                          (4) 36×99=×(-)                                                            答案: 【1】53【2】3【3】17【4】3 【1】54【2】46【3】18 【1】99【2】1 【1】36【2】100【3】1
数学 试题推荐
最近更新