文档介绍：3+8=
6+6=
1+14=
2+9=
8+9=
12-7=
10-2=
12+7=
6+9=
7+11=
16-9=
18-5=
2+9=
8+7=
7+9=
9-3=
13-7=
16+0=
8+8
9+8
14-7=
19-2=
12+5=
17+3=
10+1=
3+14=
12－7=
9+8=
6+7=
16-6=
11-2=
14+3=
17-6=
13-3=
13－5=
14－6=
12-8=
7-4=
15+1=
17-3=
13+4=
10+2=
9+7=
17－9=
15-8=
5+12=
19-11=
9-4=
20-1=
9-8=
7+8=
12－5=
15-6=
10-5=
10+9=
6+13=
1+2=
12-8=
5+9=
16－7=
5+9=
11+3=
16-7=
13+5=
20-3=
2+5=
5+7=
15－8=
13-6=
4+8=
2+15=
3+7=
2+7=
19-8=
8+5=
11－7=
2+17=
8+9=
9+5=
12+3=
11+6=
12-11=
14+3=
16－5=
17-7=
5-2=
2+10=
5+6=
1+8=
20-13=
3+4=
15－8=
7-6=
7-2=
1+12=
17-1=
18-8=
13+6=
19-7=
15-8=
19-6=
5+3=
8+12=
5+2=
9+6=
15-5=
5-1=
19-6=
14+3=
4+12=
11-10=
7+7=
4+2=
20-1=
15+5=
19-4=
5+8=
15+5=
3+3=
6+7=
8-6=
5+8=
20-1=
10-1=
5+9=
12+1=
3+17=
5+6=
7-5=
18-2=
19-5=
15-2=
5+13=
3+7=
8+4=
20-3=
13+2=
7+1=
7-1=
12-2=
1+8=
14-6=
8+2=
17-10=
19-12=
20-6=
6-3=
3+5=
9+7=
7+8=
2-1=
1+16=
11+9=
8+6=
6+13=
9+5=
13-2=
3+6=
1+4=
9+1=
17-12=
3+13=
11-3=
13-1=
9-1=
16-6=
9+9=
9+10=
16-4=
1+19=
11+7=
18-3=
17-9=
19-16=
8+7=
10-2=
13-1=
17-6=
10+4=
12+8=
6-1=
20-9=
20-8=
18-7=
16-8=
7+13=
10-5=
11+7=
18-4=
11-9=
19-5=
6+14=
2+12=
10-2=
2+8=
6+7=
14-3=
5+14=
16+4=
13-7=
16-5=
18-2=
7+6=
15-5=
4-2=
13-5=
20-6=
4+11=
18-18=
1+17=
12+4=
16-5=
20-6=
2+4=
17-5=
1+18=
14+2=
14+2=
12-6=
12-1=
6+5=
8+7=
10-9=
19-8=
14-5=
4+4=
19-5=
4+5=
17-3=
11+2=
10-5=
7+13=
6+11=
10-2=
18-8=
13+4=
5+12=
5+3=
11-4=
1+7=
12+7=
14-6=
13-5=
3+12=
5+2=
4+4=
1+8=
13+2=
12-10=
12-6=
16+2=
13-3=
14+1=
15-3=
16-7=
17-8=
14+5=
12+6=
9-2=
8+5=
5+6=
10-9=
17-5=
17-7=
18-4=
11-3=
16-7=
19-4=
11-6=
6-2=
6+2=
2+5=
9+8=
15+2=
16-5=
19-8=
9-2=
5+10=
6+10=
3-2=
6+3=
5+13=
18-4=
7-4=
4+11=
15-4=
14-9=
7+10=
16-4=
9+6=
18-5=
6+13=
5+8=
14-2=
18-7=
16-7=
14-8=
2+1=