文档介绍:20以内退位减法口算题
D
2
3
4
15-9=
12-8=
12-4=
20-7=
12-8=
14-6=
12-8=
14-6=
13-8=
12-8=
14-6=
13-8=
15-7=
14-6=
13-8=
15-7=
13-8=
20-7=
12-9=
15-9=
14-5=
15-8=
12-4=
9+8=
4+9=
5+6=
14-7=
16-8=
19-8=
13-5=
7+6=
11-4=
13-4=
14-9=
12-6=
16-9=
7+8=
15-6=
9+9=
7+9=
12-8=
11-2=
18-9=
11-5=
13-9=
11-6=
3+8=
13-6=
5+8=
12-3=
11-8=
14-8=
12-8=
18-9=
4+7=
6+6=
9+2=
12-5=
15-7=
14-9=
16-9=
8+6=
4+8=
13-7=
15-9=
11-3=
17-8=
11-9=
12-7=
17-9=
7+7=
14-6=
12-9=
9+9=
16-7=
13-9=
5+7=
13-9=
11-5=
8+8=
8+4=
15-8=
15-9=
14-8=
12-8=
18-9=
4+7=
6+6=
9+2=
12-5=
15-7=
14-9=
5
16-9=
8+6=
4+8=
13-7=
15-9=
11-3=
17-8=
11-9=
12-7=
17-9=
7+7=
14-6=
12-9=
9+9=
16-7=
13-9=
5+7=
13-9=
11-5=
8+8=
8+4=
15-8=
15-9=
15-9=
14-5=
15-8=
12-4=
13-8=
14-8=
11-2=
15-9=
12-4=
11-4=
20-5=
15-7=
20-9=
11-3=
15-7=
17-8=
12-7=
12-4=
12-4=
14-8=
11-8=
12-9=
20-5=
12-4=
11-4=
15-7=
11-3=
15-7=
17-8=
14-8=
12-8=
18-9=
14-7=
14-9=
16-9=
18-6=
14-8=
17-9=
12-8=
11-2=
18-9=
11-5=
13-9=
11-6=
13-8=
13-6=
15-8=
12-3=
11-8=
11-9=
12-7=
17-9=
15-7=
16-6=
19-9=
12-5=
18-7=
14-8=
12-8=
18-9=
14-9=
18-9=
14-9=
15-6=
14-7=
16-8=
19-8=
13-5=
17-10=
6
11-4=
13-4=
14