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General Knowledge Class 5 - Maths Fun Notes

Comprehensive study notes for Class 5 - Maths Fun olympiad preparation

Maths Fun

Welcome to the chapter on Maths Fun for Class 5. In this chapter, you will enjoy interesting facts, puzzles, and tricks about mathematics. By the end of this chapter, you will see how maths can be exciting and useful in everyday life!

Introduction

Maths is not just about numbers and sums. It is also about patterns, puzzles, and games. Let’s discover the fun side of maths!

Amazing Maths Facts

  • Zero is the only number that cannot be represented by Roman numerals.
  • A triangle has three sides and three angles.
  • The number 9 is called a magic number because the sum of the digits of its multiples is always 9 (e.g., 18: 1+8=9).
  • A circle has no corners or edges.

Maths Puzzles

  • What comes next? 2, 4, 6, 8, ___?
  • I am a number. Double me and add 6. You get 14. What am I?
  • Which shape has four equal sides and four corners?

Maths Tricks

  • To check if a number is even, see if it ends with 0, 2, 4, 6, or 8.
  • To multiply any number by 10, just add a zero at the end.
  • The sum of angles in a triangle is always 180°.

Fun Activity: Maths Around You!

Look for shapes and numbers around your home or school. Count how many circles, squares, and triangles you can find!

Summary

  • Maths is full of fun facts, puzzles, and tricks.
  • You can find maths everywhere—in games, nature, and daily life.
  • Enjoy solving puzzles and learning new maths tricks!

Practice Questions

  1. What is the next number in the pattern: 5, 10, 15, ___?
  2. How many sides does a hexagon have?
  3. Is 27 an even or odd number?
  4. What is the sum of the angles in a triangle?
  5. Name a shape with no corners.

Challenge Yourself

  • Make your own maths puzzle and ask your friends to solve it.
  • Find three things at home that are shaped like a rectangle.

Did You Know?

  • The largest number with a name is called a "googol" (1 followed by 100 zeros)!
  • Maths helps astronauts travel to space!

Glossary

  • Pattern: A repeated arrangement of numbers or shapes.
  • Puzzle: A question or problem that needs to be solved.
  • Angle: The space between two lines that meet.

Answers to Practice Questions

  1. 20
  2. 6
  3. Odd
  4. 180°
  5. Circle

Maths is fun—keep exploring and solving puzzles every day!

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