练习一（练习一（1 1） 苏教版小学数学一年级苏教版小学数学一年级( (下册下册) ) 13 9 = 4 9 + =12 12 9 = 3 3 9+ =15 15 9 = 6 9+ =16 16 9 = 9+ =17 17 9= 6 7 7 8 8 9 + 5 =14 14 9 =5 9 + 3 =12 12 9 =3 9 + 4 =13 13 9 =4 9 + 9 =18 18 9 =9 9 + 2 =11 11 9 =2 11 13 15 9 = 18 16 14 9 = 2 4 7 5 6 9 +2 +2 17 12 8 3 -2 -2 17 9 = 8 16 9 = 7 15 9 = 6 14 9 = 5 13 9 = 4 12 9 = 3 11 9 = 2 18 9 = 9 有序写出十几减9的算式 14 9 5 15 9 6 回顾 自主检测
