以下是关于【连减的简便运算】的公开课/优质课视频，一共42个
1:11:56123-
40:0848 -
56:40133 -
41:40121 -
40:1412 -
05:59117 -
05:5914 -
06:0085 -
06:0058 -
03:5868 -
08:5550 -
22:3421 -
25:43126 -
49:07127 -
56:40114 -
1:11:56126 -
49:0727 -
40:23127 -
41:2330 -
41:04104 -
38:52117 -
39:4547 -
38:4529 -
44:5842 -
41:35109 -
40:506 -
39:0157 -
46:53107 -
41:4093 -
34:26127 -
43:38115 -
39:5619 -
42:577 -
34:44122 -
40:44124 -
38:19106 -
41:3261 -
39:27119 -
41:1869 -
30:5739 -
43:4563 -
41:1095