CBSE Class 9 Maths The World of Numbers (Class 9 NCERT New) Quiz 1

1. Which of the following best describes a rational number?

A A number that cannot be expressed as a fraction B A number that can be expressed in the form , where and are integers and C A number that is always positive D A number that has an infinite non-repeating decimal expansion

2. Which of the following correctly places on the number line between two consecutive integers?

A Between and B Between and C Between and D Between and

3. Which of the following statements about rational numbers is TRUE?

A The sum of two irrational numbers is always rational B Every integer is a rational number C Every rational number is an integer D Rational numbers cannot be negative

4. How many rational numbers can be found between and ?

A None B Infinitely many C Exactly two D Only one

5. Which of the following statements is TRUE about the number ?

A is a positive integer B is a negative integer C is neither positive nor negative D is an irrational number

6. What is a possible integer that could be between -6 and 2 on a number line?

A 4 B -8 C 3 D -3

7. Which of the following expressions represents a positive number?

A -4.5 - (-5) B -1/8 + (-5/8) C 6.1 + (-6.2) D -3/4 - (-2/3)

8. A non-repeating or non-terminating decimal is classified as ________________.

A rational, real B irrational, real C integer, rational, real D whole, integer, irrational, real

9. Classify the number:

A integer, rational, real B rational, real C irrational, real D whole, integer, rational, real

10. Which of the following is irrational?

A 49\sqrt{\frac{4}{9}}94 B 123\sqrt{\frac{12}{3}}312 C 7\sqrt{7}7 D 81\sqrt{81}81