一年级数学课件有几瓶牛奶

课件21张PPT。有几瓶牛奶+ =91011121314第一种9 + 5 =第二种9 + 5 =第二种1第二种9 + 5 =1第二种9 + 5 =110第二种9 + 5 =110第三种第三种9 + 5 =4第三种9 + 5 =4第三种9 + 5 =410第三种9 + 5 =410试一试9 + 3 =7 + 9 =练一练9 + 3 =练一练9 + 6 =练一练9 + 9 =练一练4 + 9 =做一做1. 9 + 1 + 3 =9 + 1 + 5 =9 + 4 =9 + 6 =2. 9 + 1 =9 + 2 =9 + 3 =9 + 4 =9 + 5 =9 + 6 =9 + 7 =9 + 8 =9 + 9 =