# The World of Numbers Important Questions and Practice Set with Answers | NCERT Class 9 Mathematics | SwaVid

The World of Numbers" chapter in NCERT Class 9 Mathematics (Ganita Manjari) delves into the fascinating realm of real numbers, expanding upon the number...

Canonical: https://swavid.com/maths/class/9/chapter/the-world-of-numbers/practice-questions

Source: https://swavid.com/maths/class/9/chapter/the-world-of-numbers/practice-questions

# The World of Numbers

## Which of the following statements is true for a rational number?

## Find the gaps before this chapter finds them for you.

## Related chapters

Chapter 3 · Class 9 Mathematics

The World of Numbers" chapter in NCERT Class 9 Mathematics (Ganita Manjari) delves into the fascinating realm of real numbers, expanding upon the number systems learned in previous classes. This chapter introduces irrational numbers, their properties, and how they combine with rational numbers to form the set of real numbers. Students will learn to represent irrational numbers on the number line, understand the decimal expansions of different types of numbers, perform operations on real numbers, and apply the laws of exponents to real numbers with rational powers. Mastering these concepts is crucial for building a strong foundation in higher mathematics.

Your study route

Multiple Choice Questions · 1 / 15

Before you push ahead

Most stuck chapters trace back to one earlier idea. Check the prerequisites first, or let SwaVid adapt this chapter to the way your child learns.

Keep exploring Class 9

Source

- NCERT Class 9 Mathematics textbook: Ganita Manjari : Chapter 3: The World of Numbers

## Key Links

- [NCERT Mathematics](https://swavid.com/maths)
- [Class 9](https://swavid.com/maths/class/9)
- [Start with concepts](https://swavid.com/maths/class/9/chapter/the-world-of-numbers)
- [Check a prerequisite](https://swavid.com/learning-debt-identifier)
- [Concepts](https://swavid.com/maths/class/9/chapter/the-world-of-numbers)
- [Practice](https://swavid.com/maths/class/9/chapter/the-world-of-numbers/practice-questions)
- [NCERT Solutions](https://swavid.com/maths/class/9/chapter/the-world-of-numbers/ncert-solutions)
- [Find the gaps before this chapter](https://swavid.com/learning-debt-identifier)
- [Learn this chapter adapted to you](https://swavid.com/learning-style-test)
- [Previous chapter 2 . Introduction to Linear Polynomials](https://swavid.com/maths/class/9/chapter/introduction-to-linear-polynomials)
- [Next chapter 4 . Exploring Algebraic Identities](https://swavid.com/maths/class/9/chapter/exploring-algebraic-identities)
- [All Class 9 chapters](https://swavid.com/maths/class/9)
- [2 Introduction to Linear Polynomials Polynomials: Definition and Terminology · Classification of Polynomials Open chapter](https://swavid.com/maths/class/9/chapter/introduction-to-linear-polynomials)
- [4 Exploring Algebraic Identities Understanding Algebraic Identities · Identities for Squares and Binomial Products Open chapter](https://swavid.com/maths/class/9/chapter/exploring-algebraic-identities)
- [1 Orienting Yourself: The Use of Coordinates The Need for a Coordinate System · The Cartesian Plane: Axes and Origin Open chapter](https://swavid.com/maths/class/9/chapter/orienting-yourself-the-use-of-coordinates)
- [NCERT Class 9 Mathematics textbook: Ganita Manjari](https://ncert.nic.in/textbook/pdf/iemh103.pdf)