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