3/7 × 5/9 
10.5/2 -( 3/2 + 4/5 ) 
11.7/8 + ( 1/8 + 1/9 ) 
12.9 × 5/6 + 5/6 
13.3/4 × 8/9 - 1/3 
14.7 × 5/49 + 3/14 
15.6 ×( 1/2 + 2/3 ) 
16.8 × 4/5 + 8 × 11/5 
17.31 × 5/6 – 5/6 
18.9/7 - ( 2/7 – 10/21 ) 
19.5/9 × 18 – 14 × 2/7 
20.4/5 × 25/16 + 2/3 × 3/4 
21.14 × 8/7 – 5/6 × 12/15 
22.17/32 – 3/4 × 9/24 
23.3 × 2/9 + 1/3 
24.5/7 × 3/25 + 3/7 
25.3/14 ×× 2/3 + 1/6 
26.1/5 × 2/3 + 5/6 
27.9/22 + 1/11 ÷ 1/2 
28.5/3 × 11/5 + /3 
29.45 × 2/3 + 1/3 × 15 
30.7/19 + 12/19 × 5/6 
31.1/4 + 3/4 ÷ 2/3 
32.8/7 × 21/16 + 1/2 
33.101 × 1/5 – 1/5 × 21 
34.50+160÷40 
35.120-144÷18+35 
36.347+45×2-4160÷52 
37(58+37)÷(64-9×5) 
38.95÷(64-45) 
39.178-145÷5×6+42 
40.812-700÷(9+31×11) 
41.85+14×(14+208÷26) 
43.120-36×4÷18+35 
44.(58+37)÷(64-9×5) 
45.(6.8-6.8×0.55)÷8.5 
46.0.12× 4.8÷0.12×4.8 
47.(3.2×1.5+2.5)÷1.6 
48.6-1.6÷4= 5.38+7.85-5.37= 
49.7.2÷0.8-1.2×5= 6-1.19×3-0.43= 
50.6.5×(4.8-1.2×4)= 
51.5.8×(3.87-0.13)+4.2×3.74 
52.32.52-(6+9.728÷3.2)×2.5 
53.[(7.1-5.6)×0.9-1.15] ÷2.5 
54.5.4÷[2.6×(3.7-2.9)+0.62] 
55.12×6÷(12-7.2)-6 
56.12×6÷7.2-6 
57.0.68×1.9+0.32×1.9 
58.58+370)÷(64-45) 
59.420+580-64×21÷28 
60.136+6×(65-345÷23) 
15-10.75×0.4-5.7 
62.18.1+(3-0.299÷0.23)×1 
63.(6.8-6.8×0.55)÷8.5 
64.0.12× 4.8÷0.12×4.8 
65.(3.2×1.5+2.5)÷1.6 
66.3.2×6+(1.5+2.5)÷1.6 
67.0.68×1.9+0.32×1.9 
68.10.15-10.75×0.4-5.7 
69.5.8×(3.87-0.13)+4.2×3.74 
70.32.52-(6+9.728÷3.2)×2.5 
71.[(7.1-5.6)×0.9-1.15] ÷2.5 
72.5.4÷[2.6×(3.7-2.9)+0.62] 
73.12×6÷(12-7.2)-6 
74.12×6÷7.2-6 
75.33.02-(148.4-90.85)÷2.5 
76.(25%-695%-12%)*36 
77./4*3/5+3/4*2/5 
78.1-1/4+8/9/7/9 
79.+1/6/3/24+2/21 
80./15*3/5
