一年级数学下册20以内口算练习
9+6=
13-7=
6+8=
12-7=
16-8=
4+9=
16-9=
16-4=
11-5=
11-2=
13-4=
5+6=
12-3=
5+9=
14-7=
13-5=
14-6=
15-9=
9+5=
6+6=
7+4=
7+7=
15-9=
13-6=
13-4=
12-8=
11-3=
14-9=
9+8=
8+8=
5+8=
11-6=
8+3=
13-5=
5+7=
15-7=
19-9=
8+9=
12-3=
8+8=
16-9=
13-8=
18-8=
6+7=
11-2=
13-4=
15-8=
18-9=
10+6=
8+7=
9+8=
16-8=
13-7=
14-8=
16-7=
17-9=
17-5=
13-3=
14-5=
11-7=
14-5+6=
5+5+8=
9+8=
11-9=
6+8-9=
18-9+6=
13-6+8=
15-8=
17-8=
5+7-5=
12-7+6=
2+8+5=
7+8=
14-8=
4+8-5=
15-7+6=
6+8-7=
8-7=
16-9=
9+5-5=
6+8-9=
11-3+6=
13-8=
1+9=
11-3+5=
3+6+8=
4+8-3=
11-3=
13-7=
15-8+6=
16-7+4=
9-9+8=
6+8=
13-9=
3+7+6=
15-7+6=
12-5+6=
3+9=
16-7=
3+9-8=
5+7-9=
8+8-9=
15-7=
4+8=
5+7-4=
6+4+5=
4+6+8=
13-9=
5+6=
6+9-8=