一年级数学下册第2单元《20以内的退位减法》2.1《十几减9》习题新人教版.doc

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1十几减 9算一算13-9= 17-9=18-9 = 11-9=14-9= 15-9= 12-9= 16-9= 圈一圈,算一算1.13 - 9 = ( ) (个)2. 16 - 9 = ( )(个)比大小12-9 4 15-9 613-9 5 11-9 1解决问题1. 白兔和灰兔一共拔了 14 个萝卜,灰兔拔了 9 个。白兔拔了多少个萝卜?( )2. 小红比小明多得多少面红旗?( )3. 有 17 只, 有 9 只, 比 少多少只?( )我得了 15面红旗我得了9 面红旗。24. 学校器乐组有 13 位同学,女学生有 9 人,男同学有多少人?( )答案和解析算一算4 8 9 2 5 6 3 7圈一圈,算一算1. 42. 7比大小 = 解决问题1. 14-9=5 个2. 15-9=6 面3. 17-9=8 只4. 13-9=4 人

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