Math's Easy Tricks - Part-02 #51

Percentage | squares | Multiplication | Roman Formula

1 = 100%

½ =50%

1/3 = 33.33 %

¼ =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 = 7.60 %

1/14 = 7.14 %

2/3 = 66.6 %

5/6 = 83.33 %

2/5 = 40 %

3/5 = 60 %

3/2 = 150%

5/4 = 125 %

3/8 = 37.5 %

1/16 = 6.25 %

7/8 = 87.5 %

 

(01)2 = 1

(02)2 = 4

(03)2 = 9

(04)2 = 16

(05)2 = 25

(06)2 = 36

(07)2 = 49

(08)2 = 64

(09)2 = 81

(10)2 = 100

(11)2 = 121

(12)2 = 144

(13)2 = 169

(14)2 = 196

(15)2 = 225

(16)2 = 256

(17)2 = 289

(18)2 = 324

(19)2 = 361

(20)2 = 400

(21)2 = 441

(22)2 = 484

(23)2 = 529

(24)2 = 576

(25)2 = 625

(26)2 = 676

(27)2 = 729

(28)2 = 784

(29)2 = 841

(30)2 = 900

(31)2 = 961

(32)2 = 1024

(33)2 = 1089

(34)2 = 1156

(35)2 = 1225

(36)2 = 1296

(37)2 = 1369

(38)2 = 1444

(39)2 = 1521

(40)2 = 1600

(41)2 = 1681

(42)2 = 1769

(43)2 = 1849

(44)2 = 1936

(45)2 = 2025

(46)2 = 2116

(47)2 = 2209

(48)2 = 2304

(49)2 = 2401

(50)2 = 2500

 

Number of 37

37 X 3 = 1111

37 X 6 = 222

37 X 9 = 333

37 X 12 = 444

37 X 15 = 555

37 X 18 = 666

37 X 21 = 777

37 X 24 = 888

 

Number of 09

9 X 1 = 09

9 X 2 = 18

9 X 3 = 27

9 X 4 = 36

9 X 5 = 45

9 X 6 = 54

9 X 7 = 63

9 X 8 = 72

9 X 9 = 81

9 X 10 = 90

 

Number of 109

109 X 1 = 109

109 X 2 = 218

109 X 3 = 327

109 X 4 = 436

109 X 5 = 545

109 X 6 = 654

109 X 7 = 763

109 X 8 = 872

109 X 9 = 981

 

Roman Numerals

1 = I

2 = II

3 = III

4 = IV

5 = V

6 = VI

7 = VII

8 = VIII

9 = IX

10 = X

20 = XX

30 = XXX

40 = XL

50 = L

60 = LX

70 = LXX

80 = L XXX

90 = XC

1000 = M

2000 = MM

3000 = MMM