如题所述
1.3/7 Ã 49/9 - 4/3
2.8/9 Ã 15/36 + 1/27
3.12Ã 5/6 â 2/9 Ã3
4.8Ã 5/4 + 1/4
5.6÷ 3/8 â 3/8 ÷6
6.4/7 Ã 5/9 + 3/7 Ã 5/9
7.5/2 -ï¼ 3/2 + 4/5 ï¼
8.7/8 + ï¼ 1/8 + 1/9 ï¼
9.9 Ã 5/6 + 5/6
10.3/4 Ã 8/9 - 1/3
11.7 Ã 5/49 + 3/14
12.6 Ãï¼ 1/2 + 2/3 ï¼
13.8 Ã 4/5 + 8 Ã 11/5
14.31 Ã 5/6 â 5/6
15.9/7 - ï¼ 2/7 â 10/21 ï¼
16.5/9 Ã 18 â 14 Ã 2/7
17.4/5 Ã 25/16 + 2/3 Ã 3/4
18.14 Ã 8/7 â 5/6 Ã 12/15
19.17/32 â 3/4 Ã 9/24
20.3 Ã 2/9 + 1/3
2.8/9 Ã 15/36 + 1/27
3.12Ã 5/6 â 2/9 Ã3
4.8Ã 5/4 + 1/4
5.6÷ 3/8 â 3/8 ÷6
6.4/7 Ã 5/9 + 3/7 Ã 5/9
7.5/2 -ï¼ 3/2 + 4/5 ï¼
8.7/8 + ï¼ 1/8 + 1/9 ï¼
9.9 Ã 5/6 + 5/6
10.3/4 Ã 8/9 - 1/3
11.7 Ã 5/49 + 3/14
12.6 Ãï¼ 1/2 + 2/3 ï¼
13.8 Ã 4/5 + 8 Ã 11/5
14.31 Ã 5/6 â 5/6
15.9/7 - ï¼ 2/7 â 10/21 ï¼
16.5/9 Ã 18 â 14 Ã 2/7
17.4/5 Ã 25/16 + 2/3 Ã 3/4
18.14 Ã 8/7 â 5/6 Ã 12/15
19.17/32 â 3/4 Ã 9/24
20.3 Ã 2/9 + 1/3
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