If you have to solve 7.14% of 182, Standard method will take at least 30-40 seconds, maybe even more than that.
But if you know that 7.14%=1/14 , the same question will take a couple of seconds..
You must learn this conversion for rapid calculation
1/2=50%
1/3=33.33%
1/4=25%
1/5=20%
1/6=16.66%
1/7=14.28%
1/8=12.5%
1/9=11.11%
1/10=10%
1/11=9.09%
1/12=8.33%
1/13=7.69%
1/14=7.14%
1/15=6.66%
1/16=6.25%
1/17=5.88%
1/3=33.33%
1/4=25%
1/5=20%
1/6=16.66%
1/7=14.28%
1/8=12.5%
1/9=11.11%
1/10=10%
1/11=9.09%
1/12=8.33%
1/13=7.69%
1/14=7.14%
1/15=6.66%
1/16=6.25%
1/17=5.88%
1/18=5.55%
1/19=5.26%
1/20=5%
1/19=5.26%
1/20=5%
Just learn these conversion of percentage into fraction, and youll be all set to learn quick and easy way to solve the questions based on percentage.
Example questions
1} 87.5% of 560
87.5% = 100% - 12.5%
=1-(1/8)= 7/8
=1-(1/8)= 7/8
So (7/8)*560=490
2} 55.55 % of 1260
55.55% = 5 x 11.11% =5/9
(5/9)*1260 =700
Similarly you can convert the percentage into fraction and then solve it.
3} 43.75%=50%-6.25%=(1/2)-(1/16)
4} 56.25%= 50% + 6.25%=(1/2)+(1/16)
5} 91.66% =75%+ 16.66=(3/4)+(1/6)
6} 25.26% =20% + 5.26%=(1/5)+(1/19)
7} 81.25% = 75% + 6.25%=(3/4)+(1/16)
8} 206.25% = 200%+6.25%=2+(1/16)
9} 91.66% = 75%+6.66%=(3/4)+(1/15)
10}63.63%= 7 x 9.09%=7/11
Practice questions:-
Practice questions:-
11}43.75 % of 320
12}77.77% of 135
13}44.12 of 510
14}66.66% of 1350
15}8.33 % of 8400
16}22.22% of 540
17}92.31% of 1105
18}133.33% of 2274
19}56.25 % of 6400
20}90.91% of 814
21} 35 % of 240
22}64.28 % of 252
23}5.88% of 238
24}107.69 % of 663
25}66.66% of 4620
26}33.33% of 990
27}94.12% of 731
28}57.69% of 221
29}58.33% of 1440
30}16.66% of 192
31}92.86 % of 350
32}11.11 % of 1620
33}44.74% of 380
34}7.14% of 1036
35}93.75% of 256
36}83.33% of 720
37}44.44 % of 12600
38}83.34% of 510
39}6.25 % of 320
40}27.27% of 506
41}88.89% of 486
42}114.28% of 392
43}88.88% of 3807
44}105.26% of 855
45}14.28% of 616
46}91.67% of 528
47}16.66% of 582
48}42.86% of 448
49} 12.5 % of 960
50}85.72% of 623
51} 16.66% of 396
52}18.18% of 495
53}55.26% of 608
54}94.74% of 760
55}106.25% of 272
56}8.33 % of 840
57}61.11% of 450
58}87.5% of 680
59}14.28% of 315
60}12.5% of 3600
61}59.09% of 517
62}93.34% of 630
63}44.44% of 126
64}105.88% of 153
65} 33.33% of 456
66}41.67% of 660
67}56.66% of 900
68}38.89% of 720
69}36.36% of 1210
70}109.09% of 451
71}11.11% of 1620
72} 7.69% of 520
73}112.5% of 336
74}54.54% of 363
75}116.66% of 510
76}55.55% of 243
77}5.26% of 342
78}108.33% of 1680
79}62.5% of 400
80}43.34% of 240
81}40.91% of 495
82}88.88% of 3870
83} 106.66% of 180
84}55.88% of 238
85}37.5% of 736
86}42.31% of 728
87}111.11% of 405
88}63.63% of 187
89}57.14% of 1344
90}107.14% of 700
