Bank Exam Speed Maths Master Series – Page 5

Percentage Tricks & Fast Percentage Calculation Methods

Shaktimatha Learning – Speed Maths Academy
Learn percentage shortcut tricks, mental maths techniques, and fast calculation methods to improve speed and accuracy for Bank Exams, SSC, Railways, Insurance, and Competitive Exams.

Importance of Percentages in Competitive Exams

Percentages are one of the most important topics in:

Profit & Loss
Simple Interest
Compound Interest
Data Interpretation
Ratio & Proportion
Banking Aptitude

Fast percentage calculations improve:

Speed
Accuracy
Mental calculation ability

🎯 Why Learn Percentage Tricks?

Many aptitude questions become easier when converted into percentages.

Example:

50/100 = 50%
25/100 = 25%

✅ Faster Understanding

Basic Percentage Formula

0

Important Percentage Conversions

Fraction	Percentage
1/2	50%
1/3	33.33%
1/4	25%
1/5	20%
1/8	12.5%
3/4	75%
2/5	40%
5/8	62.5%

Memorizing these saves a lot of time in exams.

🔥 Trick 1: Find 10% Quickly

Method: Move decimal one place left.

Example:
10% of 580

✅ Answer = 58

Trick 2: Find 5%

Method: Find 10% and divide by 2.

Example:
5% of 640

10% of 640 = 64
64 ÷ 2 = 32

✅ Answer = 32

Trick 3: Find 1%

Method: Move decimal two places left.

Example:
1% of 850

✅ Answer = 8.5

Trick 4: Find 50%

Method: Divide by 2.

Example:
50% of 920

920 ÷ 2 = 460

✅ Answer = 460

Trick 5: Find 25%

Method: Divide by 4.

Example:
25% of 800

800 ÷ 4 = 200

✅ Answer = 200

Trick 6: Find 75%

Method: Multiply by 3 and divide by 4.

Example:
75% of 240

240 × 3 = 720
720 ÷ 4 = 180

✅ Answer = 180

Percentage Increase Formula

1

Example

Increase 500 by 20%

500 × 1.2 = 600

✅ Answer = 600

Percentage Decrease Formula

2

Example

Decrease 800 by 25%

800 × 0.75 = 600

✅ Answer = 600

Important Percentage Tricks

Percentage	Shortcut
10%	Decimal left once
1%	Decimal left twice
5%	Half of 10%
25%	Divide by 4
50%	Divide by 2
75%	Multiply by 3 ÷4

Practice Questions

10% of 960 = ?
25% of 1200 = ?
75% of 400 = ?
Increase 500 by 10% = ?
Decrease 800 by 20% = ?

✅ Answers

🎯 Preparation Strategy:
Practice percentage conversions, mental calculations, and increase/decrease methods daily to improve Data Interpretation speed, Profit & Loss solving, and banking aptitude calculations.

“Smart Percentage Tricks Reduce Calculation Time & Improve Exam Confidence.”

MIND GROW Magazine

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