Bank Exam Practice Material Series Page 10 | Average Tricks, Speed Maths & Important Concepts

 

Bank Exam Practice Material Series – Page 10

Average Tricks, Speed Maths & Important Concepts

Shaktimatha Learning – Quantitative Aptitude Practice Hub
Learn Average shortcut tricks, fast calculation methods, weighted averages, and important concepts for Bank Exams, SSC, Railways, Insurance, and Competitive Exams.

Importance of Average

Average is one of the most important arithmetic topics in competitive exams. This topic helps students improve:

• Calculation speed
• Logical reasoning
• Data analysis ability
• Numerical accuracy
• Problem-solving efficiency

Important Average Concepts

• Basic Average
• Weighted Average
• Combined Average
• Average Age Problems
• Average Marks Problems
• Replacement Concepts

Basic Average Formula

0

Combined Average Formula

1

Speed Tricks for Average

Basic Average Shortcut

Find average of:

10, 20, 30, 40, 50

Sum = 150

150 ÷ 5

Answer = 30

Equal Difference Trick

Average of:

20, 25, 30, 35, 40

Middle number method:

Answer = 30

Combined Average Trick

Average of Group A = 40

Number of students = 10

Total marks:

40 × 10 = 400

Important Fraction & Percentage Values

Fraction	Percentage	Decimal	Ratio
1/2	50%	0.5	1 : 2
1/4	25%	0.25	1 : 4
3/4	75%	0.75	3 : 4
2/5	40%	0.4	2 : 5

Practice Questions

Question 1

Find average of:

15, 25, 35, 45, 55

Sum = 175

175 ÷ 5

Answer = 35

Question 2

Average age of 5 students is 20 years.

Find total age.

20 × 5

Answer = 100 years

Question 3

Average of 8 numbers is 12.

Find total sum.

12 × 8

Answer = 96

Question 4

Average marks of 10 students is 60.

Find total marks.

60 × 10

Answer = 600

Question 5

Average of:

18, 22, 26, 30, 34

Middle value method

Answer = 26

Important Exam Tips

• Use middle value shortcuts for equal difference series
• Practice fast addition techniques
• Memorize average formulas carefully
• Improve multiplication speed daily
• Focus on both speed and accuracy

Fast Formula Revision

Topic	Formula
Average	Sum / Number
Total Sum	Average × Number
Combined Average	Total Sum / Total Number
Average Age	Total Age / Number
Replacement Concept	Difference × Total Members

Daily Practice Strategy

• Practice 20 Average questions daily
• Improve addition speed regularly
• Revise formulas carefully
• Practice shortcut methods
• Focus on accuracy with speed

Consistent practice and strong fundamentals create success in competitive exams.

Powered by Shaktimatha Learning
Bank Exam Practice Material Series