一年级20以内退位减法竖式练习.doc

20以内退位减法练习
12-8= 16-9= 12-9= 18-6= 11-5=

16-8= 17-9= 12-4= 18-9= 11-4=

20-8= 20-9= 20-2= 20-6= 20-5=

19-8= 19-9= 12-3= 14-6= 18-5=

12-8= 16-9= 12-9= 18-6= 11-5=

11-8= 16-7= 13-2= 11-6= 14-5=

20-13= 20-15= 20-19= 20-16= 20-11=