20
以内退位减法口算练习题
13-4=
13-5=
12-4=
10-4=
14-8=
17-9=
10-6=
10-5=
17-9=
12-7=
14-9=
14-8=
11-8=
11-2=
11-5=
10-7=
15-9=
16-8=
13-5=
11-6=
11-6=
15-6=
15-9=
12-3=
13-6=
16-7=
13-5=
16-8=
13-9=
10-9=
12-4=
15-7=
10-5=
15-9=
11-3=
12-7=
10-9=
10-4=
11-7=
13-9=
11-5=
10-7=
12-6=
11-3=
17-9=
10-8=
10-3=
10-3=
12-8=
15-8=