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1. 3/7 × 49/9 - 4/3
2. 8/9 × 15/36 + 1/27
3. 12× 5/6 – 2/9 ×3
4. 8× 5/4 + 1/4
5. 6÷ 3/8 – 3/8 ÷6
6. 4/7 × 5/9 + 3/7 × 5/9
7. 5/2 -（ 3/2 + 4/5 ）
8. 7/8 + （ 1/8 + 1/9 ）
9. 9 × 5/6 + 5/6
10. 3/4 × 8/9 - 1/3
11. 7 × 5/49 + 3/14
12. 6 ×（ 1/2 + 2/3 ）
13. 8 × 4/5 + 8 × 11/5
14. 31 × 5/6 – 5/6
15. 9/7 - （ 2/7 – 10/21 ）
16. 5/9 × 18 – 14 × 2/7
17. 4/5 × 25/16 + 2/3 × 3/4
18. 14 × 8/7 – 5/6 × 12/15
19. 17/32 – 3/4 × 9/24
20. 3 × 2/9 + 1/3
21. 5/7 × 3/25 + 3/7
22. 3/14 ×× 2/3 + 1/6
23. 1/5 × 2/3 + 5/6
24. 9/22 + 1/11 ÷ 1/2
25. 5/3 × 11/5 + 4/3
26. 45 × 2/3 + 1/3 × 15
27. 7/19 + 12/19 × 5/6
28. 1/4 + 3/4 ÷ 2/3
29. 8/7 × 21/16 + 1/2
30. 101 × 1/5 – 1/5 × 21
2. 8/9 × 15/36 + 1/27
3. 12× 5/6 – 2/9 ×3
4. 8× 5/4 + 1/4
5. 6÷ 3/8 – 3/8 ÷6
6. 4/7 × 5/9 + 3/7 × 5/9
7. 5/2 -（ 3/2 + 4/5 ）
8. 7/8 + （ 1/8 + 1/9 ）
9. 9 × 5/6 + 5/6
10. 3/4 × 8/9 - 1/3
11. 7 × 5/49 + 3/14
12. 6 ×（ 1/2 + 2/3 ）
13. 8 × 4/5 + 8 × 11/5
14. 31 × 5/6 – 5/6
15. 9/7 - （ 2/7 – 10/21 ）
16. 5/9 × 18 – 14 × 2/7
17. 4/5 × 25/16 + 2/3 × 3/4
18. 14 × 8/7 – 5/6 × 12/15
19. 17/32 – 3/4 × 9/24
20. 3 × 2/9 + 1/3
21. 5/7 × 3/25 + 3/7
22. 3/14 ×× 2/3 + 1/6
23. 1/5 × 2/3 + 5/6
24. 9/22 + 1/11 ÷ 1/2
25. 5/3 × 11/5 + 4/3
26. 45 × 2/3 + 1/3 × 15
27. 7/19 + 12/19 × 5/6
28. 1/4 + 3/4 ÷ 2/3
29. 8/7 × 21/16 + 1/2
30. 101 × 1/5 – 1/5 × 21
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第1个回答 2013-02-22
66 ÷ 33 - 5 × 66 ÷ 5 + 5 ÷5 = 63 66 ÷ 33 - 6 × 66 ÷ 6 + 6 ÷ 6=63 66 ÷ 33 - 7 × 66 ÷ 7 + 7 ÷7 = 63 66 ÷ 33 - 8 × 66 ÷ 8 + 8 ÷8 = 63 68 ÷ 34 - 5 × 68 ÷ 5 + 5 ÷5 = 65 68 ÷ 34 - 6 × 68 ÷ 6 + 6 ÷6 = 65 68 ÷ 34 - 7 × 68 ÷ 7 + 7 ÷7 = 65 68 ÷ 34 - 8 × 68 ÷ 8 + 8 ÷8 = 65 69 ÷ 30 - 5 × 69 ÷ 6 + 6 ÷5 = 54 70 ÷ 35 - 5 × 70 ÷ 5 + 5 ÷5 = 67 70 ÷ 35 - 6 × 70 ÷ 6 + 6 ÷6 = 67 70 ÷ 35 - 7 × 70 ÷ 7 + 7 ÷7 = 67 70 ÷ 35 - 8 × 70 ÷ 8 + 8 ÷8 = 67 71 ÷ 30 - 6 × 71 ÷ 5 + 5 ÷6 = 82 72 ÷ 30 - 5 × 72 ÷ 8 + 8 ÷5 = 41 72 ÷ 32 - 8 × 72 ÷ 6 + 6 ÷8 =× 93 72 ÷ 36 - 5 x 72 ÷ 5 + 5 ÷5 = 69 72 ÷ 36 - 6 x 72 ÷ 6 + 6 ÷6 = 69 72 ÷ 36 - 7 x 72 ÷ 7 + 7 ÷7 = 69 72 ÷ 36 - 8 x 72 ÷ 8 + 8 ÷8 = 69 74 ÷ 30 - 5 x 74 ÷ 6 + 6 ÷5 = 58 74 ÷ 37 - 5 x 74 ÷ 5 + 5 ÷5 = 71 74 ÷ 37 - 6 x 74 ÷ 6 + 6 ÷6 = 71 74 ÷ 37 - 7 x 74 ÷ 7 + 7 ÷7 = 71 74 ÷ 37 - 8 x 74 ÷ 8 + 8 ÷8 = 71 76 ÷ 38 - 5 x 76 ÷ 5 + 5 ÷5 = 73 76 ÷ 38 - 6 x 76 ÷ 6 + 6 ÷6 = 73 76 ÷ 38 - 7 x 76 ÷ 7 + 7 ÷7 = 73 76 ÷ 38 - 8 x 76 ÷ 8 + 8 ÷8 = 73 77 ÷ 30 - 6 x 77 ÷ 5 + 5 ÷6 = 89 78 ÷ 36 - 6 x 78 ÷ 8 + 8 ÷6 = 55 78 ÷ 39 - 5 x 78 ÷ 5 + 5 ÷5 = 75 78 ÷ 39 - 6 x 78 ÷ 6 + 6 ÷6 = 75 78 ÷ 39 - 7 x 78 ÷ 7 + 7 ÷7 = 75 78 ÷ 39 - 8 x 78 ÷ 8 + 8 ÷8 = 75 79 ÷ 30 - 5 x 79 ÷ 6 + 6 ÷5 = 62 80 ÷ 30 - 6 x 80 ÷ 8 + 8 ÷6 = 56 83 ÷ 30 - 6 x 83 ÷ 5 + 5 ÷6 = 96 84 ÷ 30 - 5 x 84 ÷ 6 + 6 ÷5 = 66 88 ÷ 33 - 6 x 88 ÷ 8 + 8 ÷6 = 62 89 ÷ 30 - 5 x 89 ÷ 6 + 6 ÷5 = 70 90 ÷ 30 - 5 x 90 ÷ 5 + 5 ÷5 = 86 90 ÷ 30 - 6 x 90 ÷ 6 + 6 ÷6 = 86 90 ÷ 30 - 7 x 90 ÷ 7 + 7 ÷7 = 86 90 ÷ 30 - 8 x 90 ÷ 8 + 8 ÷8 = 86 91 ÷ 35 - 5 x 91 ÷ 7 + 7 ÷5 = 61 93 ÷ 31 - 5 x 93 ÷ 5 + 5 ÷5 = 89 93 ÷ 31 - 6 x 93 ÷ 6 + 6 ÷6 = 89 93 ÷ 31 - 7 x 93 ÷ 7 + 7 ÷7 = 89 93 ÷ 31 - 8 x 93 ÷ 8 + 8 ÷8 = 89 94 ÷ 30 - 5 x 94 ÷ 6 + 6 ÷5 = 74 96 ÷ 32 - 5 x 96 ÷ 5 + 5 ÷5 = 92 96 ÷ 32 - 6 x 96 ÷ 6 + 6 ÷6 = 92 96 ÷ 32 - 7 x 96 ÷ 7 + 7 ÷7 = 92 96 ÷ 32 - 8 x 96 ÷ 8 + 8 ÷8 = 92 96 ÷ 36 - 6 x 96 ÷ 8 + 8 ÷6 = 68 99 ÷ 30 - 5 x 99 ÷ 6 + 6 ÷5 = 78 99 ÷ 33 - 5 x 99 ÷ 5 + 5 ÷5 = 95 99 ÷ 33 - 6 x 99 ÷ 6 + 6 ÷6 = 95 99 ÷ 33 - 7 x 99 ÷ 7 + 7 ÷7 = 95 99 ÷ 33 - 8 x 99 ÷ 8 + 8 ÷8 = 95 102÷34 - 5 x 102 ÷ 5 + 5 ÷5 = 98 102÷34 - 6 x 102 ÷ 6 + 6 ÷6 = 98 102÷34 - 7 x 102 ÷ 7 + 7 ÷7 = 98 102÷34 - 8 x 102 ÷ 8 + 8 ÷8 = 98 104÷30 - 5 x 104 ÷ 6 + 6 ÷5 = 82 104÷39 - 6 x 104 ÷ 8 + 8 ÷6 = 74 109÷30 - 5 x 109 ÷ 6 + 6 ÷5 = 86
第2个回答 2020-08-17
5.2ⅹ4.3+0.8
第3个回答 2008-10-18
题目呢？
第4个回答 2008-10-18
54ygwer
