一年级破十法练习题
班级:姓名:
18-9= 17-9= 1 9-
9=
16-9= 15-9= 14-9= 13-9= 12-9= 11-9= 18-8= 17-8= 16-8= 15-8= 14-8= 13-8= 12-8= 11-8=