Question

分数乘法的简便运算题十道

Answer 1

1/6 * 35 + 5/6 * 17
＝3/4 * 13 + 3/4 * 27
＝3/4 *（13+27）
＝3/4 * 40
＝30

55 * 55/56
=(56-1) * 55/56
= 56 * 55/56 - 55/56
=55- 55/56
=54又1/56

2又4/5 * 3/7 + 3/5 * 1/7
= 2又4/5 * 3/7+ 1/5 * 3/7
=3/7 * (2又4/5 + 1/5)
=3/7 * 3
=9/7

1.3/4*1/9+1/4*1/9
2.5/8*2/7+5/8*5/7
3.101*1/5-1/5*21
4.31*5*6-5/6
5.8*4/5+8*11/5
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
11.5/2*(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
16.21/22*(2/7+10/21)
17.45*2/3+1/3*45
18.1/5*2/3+4/3*1/5
19.9/11*(11/18+11/20)
20.2/5*(5/9+5/7)
21.1/3*(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
31.12*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)
41.7*(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
51.5/2 -（ 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 × 11/5
58 .31 × 5/6 – 5/6
59.9/7 - （ 2/7 – 10/21 ）
60.5/9 × 18 – 14 × 2/7
61.4/5 × 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 + 1/11 ÷ 1/2
69.5/3 × 11/5 + 4/3
70.45 × 2/3 + 1/3 × 15