%
Master Percentage
Learn the secrets of rapid mental computation used in competitive exams. These strategies will help you bypass traditional paper-and-pencil methods.
➕ Addition ➖ Subtraction ✖️ Multiplication ➗ Division x² Squaring xⁿ Exponentiation √ nth Root % Percentage △ Pythagorean Triples lcm LCM hcf HCF
%
★ The 10% and 1% Rule
Find 10% by moving the decimal 1 spot left. Find 1% by moving it 2 spots left. Build any percentage from these.
Example
15% of 60: 10% is 6, 5% is half of 10% (3). 6 + 3 = 9. %
★ Fractional Equivalents
Memorize common percentages as fractions to multiply instead. 25%=1/4, 20%=1/5, 50%=1/2, 12.5%=1/8, 33.3%=1/3.
Example
25% of 84 -> 1/4 of 84 -> 84 ÷ 4 = 21 %
★ Swapping Percentages
Mathematical property: x% of y is exactly the same as y% of x. Swap them to whatever is easier.
Example
16% of 25 is hard. Swap to 25% of 16 (which is a quarter of 16) = 4 %
★ Split Percentages
Break complex percentages into simpler additive chunks.
Example
110% of 40 = 100% (40) + 10% (4) = 44 %
★ Subtract from 100%
Instead of finding 90%, find 10% and subtract it from the total.
Example
90% of 150 -> 10% is 15. 150 - 15 = 135 🧠 Practice
Device-only practice sets. Your last score is stored only in this browser.
Percentage Table 1
Not played
Percentage Table 2
Not played
Percentage Table 3
Not played
Percentage Table 4
Not played
Percentage Table 5
Not played
Percentage Table 6
Not played
Percentage Table 7
Not played
Percentage Table 8
Not played
Percentage Table 9
Not played
Percentage Table 10
Not played
Percentage Table 11
Not played
Percentage Table 12
Not played
Percentage Table 13
Not played
Percentage Table 14
Not played
Percentage Table 15
Not played
Percentage Table 16
Not played
Percentage Table 17
Not played
Percentage Table 18
Not played
Percentage Table 19
Not played
Percentage Table 20
Not played
Percentage Table 21
Not played
Percentage Table 22
Not played
Percentage Table 23
Not played
Percentage Table 24
Not played
Percentage Table 25
Not played
Percentage Table 26
Not played
Percentage Table 27
Not played
Percentage Table 28
Not played
Percentage Table 29
Not played
Percentage Table 30
Not played
Percentage Table 31
Not played
Percentage Table 32
Not played
Percentage Table 33
Not played
Percentage Table 34
Not played
Percentage Table 35
Not played
Percentage Table 36
Not played
Percentage Table 37
Not played
Percentage Table 38
Not played
Percentage Table 39
Not played
Percentage Table 40
Not played
Percentage Table 41
Not played
Percentage Table 42
Not played
Percentage Table 43
Not played
Percentage Table 44
Not played
Percentage Table 45
Not played
Percentage Table 46
Not played
Percentage Table 47
Not played
Percentage Table 48
Not played
Percentage Table 49
Not played
Percentage Table 50
Not played
Percentage Table 51
Not played
Percentage Table 52
Not played
Percentage Table 53
Not played
Percentage Table 54
Not played
Percentage Table 55
Not played
Percentage Table 56
Not played
Percentage Table 57
Not played
Percentage Table 58
Not played
Percentage Table 59
Not played
Percentage Table 60
Not played
Percentage Table 61
Not played
Percentage Table 62
Not played
Percentage Table 63
Not played
Percentage Table 64
Not played
Percentage Table 65
Not played
Percentage Table 66
Not played
Percentage Table 67
Not played
Percentage Table 68
Not played
Percentage Table 69
Not played
Percentage Table 70
Not played
Percentage Table 71
Not played
Percentage Table 72
Not played
Percentage Table 73
Not played
Percentage Table 74
Not played
Percentage Table 75
Not played
Percentage Table 76
Not played
Percentage Table 77
Not played
Percentage Table 78
Not played
Percentage Table 79
Not played
Percentage Table 80
Not played
Percentage Table 81
Not played
Percentage Table 82
Not played
Percentage Table 83
Not played
Percentage Table 84
Not played
Percentage Table 85
Not played
Percentage Table 86
Not played
Percentage Table 87
Not played
Percentage Table 88
Not played
Percentage Table 89
Not played
Percentage Table 90
Not played
Percentage Table 91
Not played
Percentage Table 92
Not played
Percentage Table 93
Not played
Percentage Table 94
Not played
Percentage Table 95
Not played
Percentage Table 96
Not played
Percentage Table 97
Not played
Percentage Table 98
Not played
Percentage Table 99
Not played
Percentage Table 100
Not played
Percentage Mixed (1-10)
Not played
Percentage Mixed (11-20)
Not played
Percentage Mixed (21-30)
Not played
Percentage Mixed (31-40)
Not played
Percentage Mixed (41-50)
Not played
Percentage Mixed (51-60)
Not played
Percentage Mixed (61-70)
Not played
Percentage Mixed (71-80)
Not played
Percentage Mixed (81-90)
Not played
Percentage Mixed (91-100)
Not played
Percentage Mixed (1-100)
Not played