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9 + 9 = 9 + 8 = 9 + 7 =
9 + 6 = 9 + 5 = 9 + 4 =
9 + 3 = 9 + 2 =
8 + 7 = 8 + 6 = 8 + 5 =
8 + 4 = 8 + 3 = 7 + 7 =
7 + 6 = 7 + 5 =
6 + 6 = 6 + 5 =
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8 + 8 = 7 + 4 = .
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2. ²ð´óÊý£¬´ÕСÊý
9 + 9 = 8 + 9 = 7 + 9 =
6 + 9 = 5 + 9 = 4 + 9 =
3 + 9 = 2 + 9 =
7 + 8 = 6 + 8 = 5 + 8 =
4 + 8 = 3 + 8 = 7 + 7 =
6 + 7 = 5 + 7 =
6 + 6 = 5 + 6 =
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8 + 8 = 4 + 7 = .
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9 + 6 = 9 + 5 = 9 + 4 = 9 + 3 = 9 + 2 = 9 + 7 =
8 + 8 = 8 + 5 = 8 + 4 = 8 + 3 = 7 + 8 = 7 + 7 + 5 =
6 + 6 = 6 + 5 = 5
5 + 7 = 5 + 6 = 4 + 7 = word·¶ÎÄ 8 + 7 = 7 = 6 + 9 = 6 + 8 = 6 + 7 = 3 + 9 = 3 + 8 = 2 + 9 = 9 + 8 = 9 + 9 = 8 + 9 = 7 + 6 = 7 + 4 = + 9 = 4 + 9 = 4 + 8 = 8 + 6 = 7 + 9 = 5 + 8 = .
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15 £ 6 = 12 £ 5 = 17 £ 9 = 13 £ 4 =
11 £ 5 = 14
18 £ 9 =
12 £ 9 = 11
15 £ 8 = 13
14 £ 5 =
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£ 7 = 12 £ 7 = 14 £ 3 = 12 £ 8 = 13 £ 9 = 17 £ 8 = 15 £ 9 = 13 £ 4 = 11 £ 6 = £ 8 = 14 £ 9 = £ 7 = 16 £ 9 = 13 £ 4 = £ 6= 16
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20ÒÔÄÚ¼õ·¨£º 15 - 6 = 11- 8 = 13 - 5 = 18 - 9 =
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16 - 8 = 13- 7 = 15- 7 = 17- 8 = 17 - 9 = 12 - 5 = 14 - 9 = 11 - 7 = 14 - 6 = 12 - 7 = 13 - 8 = 19 - 7 =
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