Maths Formulas for SSC Flashcards

Squares, cubes and percentage-fraction values for fast calculation.

13²

169

17²

289

19²

361

23²

529

25²

625

29²

841

12³

1728

13³

2197

15³

3375

√2

≈ 1.414

√3

≈ 1.732

√5

≈ 2.236

1/3 as a percentage

33.33%

1/6 as a percentage

16.67%

1/7 as a percentage

14.28%

1/8 as a percentage

12.5%

1/9 as a percentage

11.11%

1/11 as a percentage

9.09%

1/12 as a percentage

8.33%

1/16 as a percentage

6.25%

3/8 as a percentage

37.5%

Successive change of a% and b%

Net change = a + b + (a × b)/100 %.

Price rises by r%. Cut in consumption to keep expense same?

r/(100 + r) × 100 %.