1、十 几 减 5、4、3、2,9+（ ）=11 9+（ ）=14 8+（ ）=12 8+（ ）=11 7+（ ）=11 6+（ ）=11,5,4,3,4,5,填空,2,11 8 =,13 7 =,13 6 =,18 9 =,15 8 =,17 9 =,11 7 =,14 6 =,3,6,7,9,7,8,4,8,15 9 =,12 7 =,13 9 =,15 7 =,11 6 =,16 9 =,17 8 =,14 8 =,6,5,4,8,5,7,9,6,还剩多少瓶？,试一试 11-2= 12-3= 13-4=,9,9,9,9,7,6,14 5 11 4 11 3 11 2 11 5 12 4 12
2、 3 12 5,8,送信,（只）,（只）,（只）,（只）,15 9 =,15 6 =,11 9 =,11 2 =,17 8 =,17 9 =,6,9,2,9,9,8,11 8 =,11 3 =,16 9 =,16 7 =,11 4 =,11 7 =,3,8,7,9,7,4,13 2 =,13 3 =,13 4 =,13 5 =,13 6 =,13 7 =,11,10,9,8,7,6,15 9 =,15 8 =,15 7 =,15 6 =,15 5 =,15 4 =,6,7,8,9,10,11,7 + 6 =,13 7 =,13 6 =,8 + 7 =,15 8 =,15 7 =,13,6,7,15,7,8,7 + 5 =,12 5 =,12 7 =,6 + 5 =,11 5 =,11 6 =,12,7,5,11,6,5,有8个女同学，有5个男同学。你能提出什么问题？,U盘、电脑坏了？教学资料不见了？以前的资料没保存？每一届重复劳动？找不到精品课件、试题、教案反思？各大文库价格昂贵？来【163文库】吧，你可以：上传分享资料赚取零用钱；上传资料，永久保存，方便下届使用；百万教学资源供你下载；创建你的教学空间，分类收藏存储资料；【平台地址：】,谢谢,
