一年级数学下册20以内的退位减法 练习题
17-9-6= 15-7-4= 12-4-5= 17-9-2= 18-7-5= 16-8-5= 20-7-8=
11-6-0= 20-7-9= 20-6-8= 20-8-8= 13-5-6= 18-9-4= 17-3-7=
14-( )=5 13-( )=7
12-( )=6 16-( )=8
11-( )=8 12-( )=5
14-8O7 16-7O9 7+6O13
15O8=7 7O9=16 17O5=12
15O8=7 16O8=8 7O8=15
11O8=3 16-9O8 5+7O11
13-( )=5 15-( )=8 15-( )=6 11-( )=7 13-( )=6 14-( )=8 11-3O7 9O4=13 13O6=7 8O3=11 18O9=9 7O4=11 10O4=6 8O6=14 8+6O14 12O3=9 6O9=15
12-( )=4 11-( )=3 17-( )=8 7O9=16 6O5=11 5O5=10 6O7=13 9O9=0 13O2=11 15O6=9 12O2=9 5+8O12
因篇幅问题不能全部显示,请点此查看更多更全内容