资源描述
15-9=
12-6=
17-9=
18-9=
11-2=
20-1=
16-9=
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12-3=
15-6=
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13-4=
15-9=
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11-2=
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11-8=
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15-8=
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12-9=
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15-9=
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12-8=
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12-9=
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9+8=
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14-9=
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16-9=
7+8=
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9+9=
7+9=
12-8=
11-2=
18-9=
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3+8=
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12-3=
11-8=
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9+2=
12-5=
15-7=
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8+6=
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11-3=
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11-9=
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7+7=
14-6=
12-9=
9+9=
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5+7=
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8+4=
15-8=
15-9=
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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=
15-9=
14-5=
15-8=
12-4=
13-8=
14-8=
11-2=
15-9=
12-4=
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15-7=
20-9=
11-3=
15-7=
17-8=
12-7=
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12-4=
14-8=
11-8=
12-9=
20-3=
20-5=
13-6= 18-9= 11-7= 15-7= 14-8= 12-7= 11-3= 12-5= 12-8= 11-4=
17-9= 13-6= 14-5 = 15-6= 12-9=
12-8= 11-9= 13-5= 12-9= 11-8=
16-8= 17-8= 16-7= 12-3= 11-3=
12-3= 17-9= 11-2= 17-8= 14-6=
15-7= 13-6 = 11-6= 11-5= 12-7=
15-9=
12-6=
17-9=
18-9=
11-2=
20-1=
16-9=
16-8=
12-3=
15-6=
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13-4=
15-9=
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15-9=
15-9=
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11-2=
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11-3=
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12-4=
11-8=
12-9=
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12-9=
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12-4=
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12-8=
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12-8=
14-6=
13-8=
15-7=
14-6=
13-8=
15-7=
20-8
15-9=
14-5=
15-8=
12-4=
9+8=
4+9=
5+6=
14-7=
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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=
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12-3=
11-8=
14-8=
12-8=
18-9=
4+7=
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9+2=
12-5=
15-7=
14-9=
16-9=
8+6=
4+8=
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11-3=
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8+6=
4+8=
13-7=
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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=
20-3=
20-5=
12-4=
11-4=
20-5=
15-7=
20-10=
11-3=
15-7=
17-8=
14-8=
12-8=
18-9=
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18-6=
14-8=
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11-2=
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11-6=
13-8=
13-6=
15-8=
12-3=
11-8=
11-9=
12-7=
17-9=
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19-9=
12-5=
18-7=
14-8=
12-8=
18-9=
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18-9=
14-9=
15-6=
14-7=
16-8=
19-8=
13-5=
17-10=
11-4=
13-4=
14-9=
15-9=
16-9=
17-8=
15-6=
18-9=
14-9=
16-9=
17-6=
14-8=
13-7=
15-9=
11-3=
17-8=
12-7=
12-4=
12-4=
14-8=
15-6=
19-2=
12-5=
15-7=
14-6=
12-9=
17-9=
16-7=
13-8=
14-8=
12-2=
15-9=
18-9=
14-9=
15-6=
11-7=
11-8=
12-7=
17-9=
17-7=
14-7=
12-9=
13-7=
16-7=
13-9=
15-7=
13-9=
11-5=
18-8=
18-4=
15-8=
15-6=
13-7=
15-9=
11-3=
17-8=
11-8=
12-9=
20-3=
20-9=
18-8=
18-4=
15-8=
14-9=
15-9=
14-5=
12-6=
12-4=
18-9= 12-8= 12-6= 15-7= 12-8= 12-6=
13-6= 14-8= 12-5= 13-6= 14-8= 12-5=
11-9= 11-3= 13-6= 11-9= 13-6= 11-3=
14-9= 12-6= 11-2= 14-9= 11-2= 12-6=
12-9= 13-8= 14-6= 14-6= 13-8= 12-9=
13-8= 15-8= 11-5= 15-8= 11-5= 13-8=
13-9= 11-7= 15-6= 13-9= 11-4= 15-6=
12-5= 17-8= 11-5= 12-5= 11-8= 17-8=
17-9= 12-7= 13-4= 17-9= 12-7= 13-4=
14-9= 13-6= 12-5= 14-9= 13-6= 12-5=
11-8= 13-7= 14-5= 15-8= 13-7= 14-6=
15-6= 16-7= 13-5= 15-6= 18-9= 16-7=
12-6= 13-9= 11-4= 14-8= 13-9= 13-9=
15-9= 15-7= 13-4= 11-5= 15-7= 13-7=
15-7= 14-7= 11-3= 15-7= 14-7= 11-3=
16-9= 12-3= 12-4= 16-9= 12-3= 12-4=
11-4= 11-6 11-2= 11-4= 11-6= 11-4=
17-9= 16-7= 17-9= 16-7= 14-7= 13-8=
18-9= 12-6= 12-8= 14-7= 12-8 = 12-8=
11-8= 16-9= 11-9= 11-8= 16-9= 11-9=
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