文档介绍：1 / 4
15-8=
2+9=
13-8=
11-9=
18-7=
17-8=
11-8=
20-7=
16-7=
16-7=
17-9=
12-8=
18-3=
15-9=
11-9=
12-8=
18-5=
15-7=
15-4=
14-5=
9+9=
17-8=
11-3=
18-9=
15-8=
20-5=
11-5=
19-8=
11-2=
15-8=
2+8=
16-9=
15-7=
17-8=
7+6=
16-9=
20-3=
16-7=
4+9=
11-4=
16-9=
13-6=
13-4=
11-6=
15-6=
17-5=
17-3=
12-9=
12-6=
11-5=
6+2+3=
20-10-8=
18-7-10=
10-5-4=
20-7-5=
5+9+5=
6+7+1=
8+1+7=
18-3-1 =
11+3+2=
16-7-4=
3+4+5=
4+6+5=
16-4-4=
18-9-2=
15-3-8=
20-8-2=
6+2+10=
17-5-3=
19-6-5=
12-2-1 =
15-4-6=
8+6+2=
18-10-6=
17-7-5=
14-9-2=
2+7+3=
15-4-10=
17-4-9=
5+4+10=
8+7+2=
19-10-7=
2+8+5=
18-6-2=
17-2-2=
10-8-2=
9-2-5=
4+7+2=
17-7-2=
6+7+3=
11+8+4=
19-7-9=
3+10+5=
5+6+8=
3+4+5=
3+9+10=
14-3-6=
7+7+6=
9+3+7=
19-6-13=
2 / 4
8+8=
8+6=
14-6=
13-7=
8+3=
11-9=
5+6=
14-6=
16-2=
14-9=
14-9=
8+8=
9+7=
12-6=
11-2=
6+6=
15+5=
16-8=
12-3=
13-7=
19-7=
14-8=
12-5=
14-6=
16-3=
13-9=
11-3=
20-9=
15-9=
11-9=
14+6=
12-8=
12-4=
18-10=
19-3=
5+8=
12-7=
16-9=
7+9=
20-4=
14-7=
14-9=
8+4=
20-3=
17-8=
14-8=
19-4=
6+8=
11-7=
13-9=
4+7=
16-6=
18-4=
14-6=
10+8=
9+4=
13-9=
7+7=
19-5=
9+5=
5+7=
18-6=
12-5=
20-2=
5+7=
3+8=
15-8=
6+9=
7+8=
5+9=
9+9=
9+6=
12-7=
17-4=
11-3=
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