3/4*1/9+1/4*1/9

2. 5/8*2/7+5/8*5/7

3. 101*1/5-1/5*21

4. 31*5*6-5/6

5. 8*4/5+8*11/5

6. 6*(1/2+2/3)

7. (3/5-1*2)*5/3

8. 12*(2*3+1/6)

9. 4/7*5/9+3/7*5/9

10. (3+1)*5/6

11. 5/2*(3/2+4/5)

12. 1/6*(2/3+3/4)

13. 7/72*(1/8+1/9)

14. 9*5/6+5/6

15. 12*5/6-5/6*3

16. 21/22*(2/7+10/21)

17. 45*2/3+1/3*45

18. 1/5*2/3+4/3*1/5

19. 9/11*(11/18+11/20)

20. 2/5*(5/9+5/7)

21.1/3*(5*(2/3))

22.(1+37%)*20

23.35/2*75%

24.30*(50/2)

25.(54+10%)/20

26.(25/3*18)*30%

27.(2+70%)*40

28.1/7*(98*(1/4)*2)

29.25%*((23+2%)*4)

30.(30+20%)/2

31.12*3/(25+20%)

32.30/(3+40%)

33.27/8*16*10%

34.(2/3)*(3+6)*(1/2)

35.45*(1/9)*24

36.(35+10%)*27

37.(45+50%)*3*1/2

38.(43*20%)+(3*(1/9))

39.27*(9*(1/3))*5%

40.14*15%+25*8*(1/4)

41.7*(1/2)/49

42.(1+48%)*2

43.(4*8-12)*50%

44.(48/60%)/10

45. 63*(1/7)*30%

46. 8/9 × 15/36 + 1/27

47. 12× 5/6 – 2/9 ×3

48. 8× 5/4 + 1/4

49. 6÷ 3/8 – 3/8 ÷6

50. 4/7 × 5/9 + 3/7 × 5/9

51. 5/2 -（ 3/2 + 4/5 ）

52. 7/8 + （ 1/8 + 1/9 ）

53. 9 × 5/6 + 5/6

54. 3/4 × 8/9 - 1/3

55. 7 × 5/49 + 3/14

56. 6 ×（ 1/2 + 2/3 ）

57. 8 × 4/5 + 8 × 11/5

58 . 31 × 5/6 – 5/6

59. 9/7 - （ 2/7 – 10/21 ）

60. 5/9 × 18 – 14 × 2/7

61. 4/5 × 25/16 + 2/3 × 3/4

62. 14 × 8/7 – 5/6 × 12/15

63. 17/32 – 3/4 × 9/24

64. 3 × 2/9 + 1/3

65. 5/7 × 3/25 + 3/7

66. 3/14 ×× 2/3 + 1/6

67. 1/5 × 2/3 + 5/6

68. 9/22 + 1/11 ÷ 1/2

69. 5/3 × 11/5 + 4/3

70. 45 × 2/3 + 1/3 × 15

71. 7/19 + 12/19 × 5/6

72. 1/4 + 3/4 ÷ 2/3

73. 8/7 × 21/16 + 1/2

74. 101 × 1/5 – 1/5 × 21