Kidz Olympiad🎉

General Knowledge Class 8 - Quantitative Aptitude-And-Reasoning Notes

Comprehensive study notes for Class 8 - Quantitative Aptitude-And-Reasoning olympiad preparation

Quantitative Aptitude and Reasoning

Welcome to the chapter on Quantitative Aptitude and Reasoning for Class 8. In this chapter, you will learn how to solve problems using numbers, logic, and patterns. By the end of this chapter, you will be able to answer questions on arithmetic, puzzles, and logical reasoning with confidence!

Introduction

Quantitative aptitude means solving problems using numbers and calculations. Reasoning means using logic to solve puzzles and find answers. Both skills are important for exams and daily life.

Quantitative Aptitude Topics

  • Number systems
  • Fractions and decimals
  • Percentages
  • Ratio and proportion
  • Simple and compound interest
  • Profit and loss
  • Time, speed, and distance
  • Averages
  • Data interpretation

Reasoning Topics

  • Patterns and sequences
  • Analogies
  • Classification
  • Coding and decoding
  • Blood relations
  • Direction sense
  • Venn diagrams
  • Logical puzzles

Sample Quantitative Questions

  • What is 25% of 160?
  • If a train travels 120 km in 2 hours, what is its speed?
  • Find the average of 12, 18, and 24.

Sample Reasoning Questions

  • Find the next number in the sequence: 2, 4, 8, 16, ___
  • If CAT is coded as DBU, how is DOG coded?
  • Which is the odd one out: Apple, Mango, Carrot, Banana?

Tips for Success

  • Practice regularly to improve speed and accuracy.
  • Read questions carefully before answering.
  • Use logic and elimination to solve reasoning questions.
  • Check your calculations to avoid mistakes.

Fun Activity: Puzzle Time!

Try solving a Sudoku or a crossword puzzle. Make your own number or logic puzzle and challenge your friends!

Summary

  • Quantitative aptitude uses numbers and calculations.
  • Reasoning uses logic and patterns.
  • Both skills help you solve problems in exams and life.

Practice Questions

  1. What is the ratio of 8 to 24?
  2. If a shopkeeper buys a pen for ₹10 and sells it for ₹15, what is the profit?
  3. Find the next number: 5, 10, 15, ___
  4. If EAST is coded as FBTW, how is WEST coded?
  5. Which is the odd one out: Rose, Lily, Sunflower, Potato?

Challenge Yourself

  • Make a table of your daily study hours and find the average.
  • Create a pattern and ask your friend to find the next number.

Did You Know?

  • Reasoning questions help improve your brain power!
  • Many competitive exams test both quantitative aptitude and reasoning.

Glossary

  • Quantitative: Related to numbers and calculations.
  • Reasoning: Using logic to solve problems.
  • Average: The sum of numbers divided by how many numbers there are.
  • Pattern: A repeated or regular way in which something happens.

Answers to Practice Questions

  1. 1:3
  2. ₹5
  3. 20
  4. XFTW
  5. Potato (it is a vegetable, others are flowers)

Practice quantitative aptitude and reasoning every day to sharpen your mind!

Quick Navigation