试卷更新日期:2021-03-19 类型:同步测试
14 + 13 = ( )12 + ( )12 = ( )12
516 - 18 = ( )( ) - ( )( ) = ( )( )
查看试题解析
12 - 13 = 34 + 78 = 12 + 15 = 56 - 19 =
14 + 56 = 910 - 12 = 716 + 18 = 614 - 17 =