# CBSE Class 9 Mathematics Number System Worksheet Set A

• Number System
Read and download free pdf of CBSE Class 9 Mathematics Number System Worksheet Set A. Students and teachers of Class 9 Number System can get free printable Worksheets for Class 9 Number System in PDF format prepared as per the latest syllabus and examination pattern in your schools. Standard 9 students should practice questions and answers given here for Number System in Grade 9 which will help them to improve your knowledge of all important chapters and its topics. Students should also download free pdf of Class 9 Number System Worksheets prepared as per the latest NCERT, CBSE, KVS books and syllabus issued this academic year and solve important problems provided here with solutions on daily basis to get more score in school exams and tests 1.) Can we write 0 in the form of p/q?

a. Yes

b. No

c. Cannot be explained

d. None of the above

2.) The three rational numbers between 3 and 4 are:

a. 5/2, 6/2, 7/2

b. 13/4, 14/4, 15/4

c. 12/7, 13/7, 14/7

d.11/4, 12/4, 13/4

3.) In between any two numbers, there are:

a. Only one rational number

b. Two rational numbers

c. Infinite rational numbers

d. No rational number

4.) Every rational number is:

a. Whole number

b. Natural number

c. Integer

d. Real number

5.) √9 is  __________ number.

a. A rational

b. An irrational

c. Neither rational nor irrational

d. None of the above

6.) Which of the following is an irrational number?

a. √16

b. √(12/3)

c. √12

d. √100

7.) 3√6 + 4√6 is equal to:

a. 6√6

b. 7√6

c. 4√12

d. 7√12

8.) √6 x √27 is equal to:

a. 9√2

b. 3√3

c. 2√2

d. 9√3

9.) Which of the following is equal to x3?

a. x– x3

b. x6.x3

c. x6/x3

d. (x6)3

10.) Which of the following is an irrational number?

a. √23

b. √225

c. 0.3796

d. 7.478478

11.) Which of the following is an irrational number?

a. 0.14

b. 0.14¯¯¯¯¯¯160.1416¯

c. 0.¯¯¯¯¯¯¯¯¯¯¯14160.1416¯

d. 0.4014001400014…

12.) 2√3+√3 =

a. 6

b. 2√6

c. 3√3

d. 4√6

13.) Find the value of 2−1√2+12−12+1, if √2 = 1.4142.

a. 5.8282

b. 0.1718

c. 0.4142

d. 2.4142

14.) The number obtained on rationalising the denominator of 1√7−217−2 is

a. (√7+2)/3

b. (√7-2)/3

c. (√7+2)/5

d. (√7+2)/45

15.) Which of the following is rational?

a. 4/0

b. 0/4

c. √3

d. π

16.) The irrational number between 2 and 2.5 is

a. √11

b. √5

c. √22.5

d. √12.5

17.) The value of √10 times √15 is equal to

a. 5√6

b. √25

c. 10√5

d. √5

18.) The decimal representation of the rational number is

a. Always terminating

b. Either terminating or repeating

c. Either terminating or non-repeating

d. Neither terminating nor repeating

19.) Which of the following is a rational number?

a. 0

b. 2√3

c. 2+√3

d. π

20.) Which of the following is an irrational number?

a. √(4/9)

b. √12/√3

c. √7

d. √81

21). In between two rational number there is/are:

a) Exactly one rational number

b) Infinitely many rational number

c) Many irrational numbers

d) Only irrational numbers

22). The product of a rational and an irrational numbers is:

a) Always an integer

b) Always a rational number

c) Always an irrational number

d) Sometimes rational and sometimes irrational

23). The decimal expansion of an irrational number may be:

a) Terminating

b) Recurring

c) Either terminating or non- terminating

d) Non-terminating and non-recurring

24) A rational number between √2 and √3:

a) 1.9

b) (√2. √3)/2

c) 1.5

d) 1.8

25) A rational number between √2 and √3:

a) 1.9

b) (√2. √3)/2

c) 1.5

d) 1.8

26) 4√5 + 5√5 is equal to:

a) 9√5

b) 9√10

c) 5√10

d) 7√5

27). Which of the following is irrational?

a) 0.4014001400014…

b) 0.14 28) √12 X √15 is equal to:

a) 5√6

b) 6√5

c) 10√5

d) √25

29) Which of the following is equal to x2?   a) 1/4

b) 1/2

c) 4

d) 1/16  32) What would be the denominator after rationalizing 7/(5√3 – 5√2)?

a) 19

b) 20

c) 25 d) None of these   a) 2.732

b) 0.2679

c) 0.732

d) 0.517

35). Value of (256)0.16 X (256)0.09 is:

a) 4

b) 16

c) 64

d) 256.25

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