1.(5.5+6.8×0.65)÷2.5
2.8.12× 6.8÷0.12×12.8
3.(3.2×1.5+2.5)÷1.6
4.5.38+7.85-5.37
5.17.2÷0.8-1.2
6.0.68×1.9+0.32×1.9
7.10.15-10.75×0.4-5.7
8.12.8×(3.27-0.53)+4.2×13.7
9.6.1+9.728÷3.2×2.5
10.(7.1-5.6)×0.9+1.15
11.5.6×(3.7-2.9)+0.83
12.5.5+(12.8-6.8×0.55)÷8.5
13.0.12× 4.8÷0.12
14.(3.2×1.5+2.5)÷1.6
15.5.38+7.85-5.37
16.7.2÷0.8-1.2×5.2
17.6.5×(14.8-1.2×4.3)
18.5.8×(3.87-0.13)+4.2×3.74
19.32.52-(6.6+9.728÷3.2)×2.5
20.[(7.1-5.6)×0.9-1.15] ÷2.5
21.5.4÷[2.6×(3.7-2.9)+0.62]
22.(6.8-6.8×0.55)÷8.5
23.0.12× 4.8-5.26×3.2
24.(3.2×1.5+2.5)÷1.6
3774÷37×(65+35)
540-(148+47)÷13
(308—308÷28)×11
(10+120÷24)×5
(238+7560÷90)÷14
21×(230-192÷4)
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
31.50+160÷40 (58+370)÷(64-45)
32.120-144÷18+35
33.347+45×2-4160÷52
34(58+37)÷(64-9×5)
35.95÷(64-45)
36.178-145÷5×6+42 420+580-64×21÷28
37.812-700÷(9+31×11) (136+64)×(65-345÷23)
38.85+14×(14+208÷26)
39.(284+16)×(512-8208÷18)
40.120-36×4÷18+35
41.(58+37)÷(64-9×5)
42.(6.8-6.8×0.55)÷8.5
43.0.12× 4.8÷0.12×4.8
44.(3.2×1.5+2.5)÷1.6 (2)3.2×(1.5+2.5)÷1.6
45.6-1.6÷4= 5.38+7.85-5.37=
46.7.2÷0.8-1.2×5= 6-1.19×3-0.43=
47.6.5×(4.8-1.2×4)
48.10.15-10.75×0.4-5.7
49.5.8×(3.87-0.13)+4.2×3.74
50.32.52-(6+9.728÷3.2)×2.5
51.[(7.1-5.6)×0.9-1.15] ÷2.5
52.5.4÷[2.6×(3.7-2.9)+0.62]
53.12×6÷(12-7.2)-6 (4)12×6÷7.2-6
:0.1(x+6)=3.3×0.4
31:4(x-5.6)=1.6
32:7(6.5+x)=87.5
33:(27.5-3.5)÷x=4
34:3X+5X=48
35:14X-8X=12
36:6x5+2X=44
37:20X-50=50
38:28+6X=88
39:32-22X=10
40:24-3X=3
41:10X(5+1)=60
42:99X=100-X
43:X+3=18
44:X-6=12
45:56-2X=20
46:4y+2=6
47:x+32=76
48:3x+6=18
49:16+8x=40
50:2x-8=8
51:4x-3*9=29
52:8x-3x=105
53:x-6*5=42
54:x+5=7
55:2x+3=10
56:12x-9x=9
57:6x+18=48
58:56x-50x=30
59:5x=15
60:78-5x=28
61:32y-29=3
62:5x+5=15
63:89x-9=80
64:100-20x=20
65:55x-25x=60
66:76y-75=1
67:23y-23=23
68:4x-20=0
69:80y+20=100
70:17:85y+1=-86
71:18:45x-50=40
72:5x=15
73:78-5x=28
74:32y-29=3
75:5x+5=15
76:89x-9=80