注:/为几分之几1.3/7×49/9-4/32.8/9×15/36+1/273.12×5/6–2/9×34.8×5/4+1/45.6÷3/8–3/8÷66.4/7×5/9+3/7×5/97.5/2-（3/2+4/5）8.7/8+（1/8+1/9）9.9×5/6+5/610.3/4×8/9-1/311.7×5/49

Question

注:/为几分之几
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）= 0.68×1.9+0.32×1.9
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

Answer 1

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1.3/7 × 49/9 - 4/3
=（3×49）/（7×9）-4/3
=147/63-4/3
=147/63-84/63
=63/63
=1
2.8/9 × 15/36 + 1/27
=（8×15）/（9×36）+ 1/27
=120/324 + 12/324
=132/324
=43/108
3.12× 5/6 – 2/9 ×3
=10 - 2/3
=28/3
4.8× 5/4 + 1/4
=10 + 1/4
=41/4
5.6÷ 3/8 – 3/8 ÷6
=16 - 1/16
=255/16
6.4/7 × 5/9 + 3/7 × 5/9
=20/63 + 15/63
=35/63
=5/9
7.5/2 -（ 3/2 + 4/5 ）
=25/10 - 23/10
=2/10
=1/5
8.7/8 + （ 1/8 + 1/9 ）
=63/72 + 17/72
=80/72
=10/9
9.9 × 5/6 + 5/6
=（9+1）×5/6
=10×5/6
=25/3
10.3/4 × 8/9 - 1/3
=24/36 - 12/36
=12/36
=1/3
11.7 × 5/49 + 3/14
=5/7 + 3/14
=10/14 + 3/14
=13/14
12.6 ×（ 1/2 + 2/3 ）
=6×5/6
=5
13.8 × 4/5 + 8 × 11/5
=32/5 + 88/5
=120/5
=24
14.31 × 5/6 – 5/6
=（31-1）× 5/6
=30×5/6
=25
15.9/7 - （ 2/7 – 10/21 ）
=27/21 - 6/21 + 10/21
=31/21
16.5/9 × 18 – 14 × 2/7
=10 - 4
=6
17.4/5 × 25/16 + 2/3 × 3/4
=5/4 + 2/4
=7/4
18.14 × 8/7 – 5/6 × 12/15
=16 - 3/4
=61/4
19.17/32 – 3/4 × 9/24
=17/32 - 9/32
=8/32
=1/4
20.3 × 2/9 + 1/3
=2/3 + 1/3
=1
21.5/7 × 3/25 + 3/7
=3/35 + 15/35
=18/35
22.3/14 ×× 2/3 + 1/6
=1/7 + 1/6
=13/42
23.1/5 × 2/3 + 5/6
=2/15 + 5/6
=4/30 + 25/30
=29/30
24.9/22 + 1/11 ÷ 1/2
=1/2 ÷ 1/2
=1
25.5/3 × 11/5 + 4/3
=11/3 + 4/3
=15/3
=5
26.45 × 2/3 + 1/3 × 15
=30+5
=35
27.7/19 + 12/19 × 5/6
=1× 5/6
=5/6
28.1/4 + 3/4 ÷ 2/3
=1 ÷ 2/3
=3/2
29.8/7 × 21/16 + 1/2
=3/2 + 1/2
=2
30.101 × 1/5 – 1/5 × 21
=101/5 - 21/5
=80/5
=16
31.50＋160÷40 （58+370）÷（64-45）
题目不清楚
32.120-144÷18+35
=120-8+35
=147
33.347+45×2-4160÷52
=347 + 90 - 80
=357
34（58+37）÷（64-9×5）
=95 ÷ 19
=5
35.95÷（64-45）
=95÷19
=5
36.178-145÷5×6+42 420+580-64×21÷28
题目不清楚
37.812-700÷（9+31×11） （136+64）×（65-345÷23）
题目不清楚
38.85+14×（14+208÷26）
=85+14×22
=85+308
=396
39.（284+16）×（512-8208÷18）
40.120-36×4÷18+35
=120-8+35
=147
41.（58+37）÷（64-9×5）
=95 ÷ 19
=5
42.(6.8-6.8×0.55)÷8.5
=0
43.0.12× 4.8÷0.12×4.8
=1
44.（3.2×1.5+2.5）÷1.6
= 8
45.6-1.6÷4
=2
46.7.2÷0.8-1.2×5
=3
47.6.5×（4.8-1.2×4）
=0
48.10.15-10.75×0.4-5.7
=10.15-4-5.7
=0.45
49.5.8×（3.87-0.13）+4.2×3.74
=5.8×3.57 +4.2×3.74
=20.706 + 15.708
=4.998
50.32.52-（6+9.728÷3.2）×2.5
=32.52 - 7.6
=25.16
51.[（7.1-5.6）×0.9-1.15] ÷2.5
=0.2÷2.5
=2/25
52.5.4÷[2.6×（3.7-2.9）+0.62]
=5.4÷2.6×1.42
53.12×6÷（12-7.2）-6
= 6 ÷ （—1.2）
= —5