20以内退位减法口算题.doc

14-7= 12-6= 11-6= 6+7= 17-9= 7+8= 16-9= 15-8= 17-8= 6+9= 14-9= 13-7= 11-9= 14-6= 15-6= 17-8= 11-7= 11+2=8+6= 13-6= 15-4=15-8=13-9= 12-6= 16-7= 11-9= 14-3= 14-7= 16-8= 11-3= 18-7= 12-8= 13-6= 18-9= 8+6= 17-8= 13-2=11-5= 16-7= 5+6= 12-6= 11-6= 14-6= 15-8= 14-8= 12-8=13-7=16-7=15-6=12-5=11-9=17-8=16-8=14-7=12-4=13-5=11-8=14-8=13-9=15-6=15-9=16-8=16-7=15-9=12-7=12-6=12-( )=9 11-8= 15-( )=7 12-( )=3 17-( )=913-5= ( )-6=7 12-( )=5 13-( )=8 ( )-7=714-( )=6 15-( )=9 11-( )=7 17-( )=8( )-5=7 13-( )=7 13-( )=5 15-( )=812-( )=917-( )=7 12-( )=6 16-( )=9 ( )-4=74+7= ( )-6=5 14-( )=6 18-( )=9 20-515-94-38-815-618-917-6