2.5/8*2/7+5/8*5/7

3. 10 1* 1/5- 1/5*2 1

4.3 1*5*6-5/6

5.8*4/5+8* 1 1/5

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

1 1.5/2*(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

16.2 1/22*(2/7+ 10/2 1)

17.45*2/3+ 1/3*45

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

19.9/ 1 1*( 1 1/ 18+ 1 1/20)

20.2/5*(5/9+5/7)

2 1. 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

3 1. 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)

4 1.7*( 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

5 1.5/2 -( 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 × 1 1/5

58 .3 1 × 5/6 – 5/6

59.9/7 - ( 2/7 – 10/2 1 )

60.5/9 × 18 – 14 × 2/7

6 1.4/5 × 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/ 1 1 ÷ 1/2

69.5/3 × 1 1/5 + 4/3

70.45 × 2/3 + 1/3 × 15