 # Important Questions Class 9 Maths Chapter 1 Number System

Important questions for Class 9 Maths Chapter 1 Number system are given here. These practice questions will help the students to build a better understanding of the Number system concept in Maths. These Class 9 Chapter 1 questions are important for CBSE Class 9 Maths exams.

Also Check:

## Number System Important Questions For Class 9 (Chapter 1)

Below given important Number system questions for 9th class students will help them to get acquainted with a wide variation of questions and thus, develop problem-solving skills.

Q.1: Find five rational numbers between 1 and 2. [Answer: 7/6, 8/6, 9/6, 10/6, 11/6]

Q.2: Find five rational numbers between 3/5 and 4/5. [Answer: 19/30, 20/30, 21/30, 22/30, 23/30]

Q.3: Locate 3 on the number line.

Q.4: Are the square roots of all positive integers irrational? If not, give an example of the square root of a number that is a rational number.

Q.5: Find the decimal expansions of 10/3, 7/8 and 1/7.

Q.6: Show that $0.3333… = 0.\bar{3}$ can be expressed in the form p/q, where p and q are integers and q ≠ 0.

Q.7: What can the maximum number of digits be in the repeating block of digits in the decimal expansion of 1/17? Perform the division to check your answer.

Q.8: Find three different irrational numbers between the rational numbers 5/7 and 9/11. [Answer: 0.720720072000.., 0.730730073000…, 0.808008000…]

Q.9: Visualise 3.765 on the number line, using successive magnification

Q.10: Add 22+ 53 and 2 – 33. [Answer: 32 + 2√3]

Q.11: Simplify: (√3+√7) (√3-√7). [Answer: -4]

Q.12: Rationalise the denominator of 1/[7+3√3].

Q.13: Represent √(9.3) on the number line.

Q.14: Simplify:

(i)72/3.71/5
(ii)101/2/101/4
Download BYJU’S-The Learning App and get personalised video content to understand the various concepts of Maths, defined for Class 9.

1. Jahid ahmed

Sir,so much thanks for opening this learning app……its quiet much useful
For me….thanks a lot

2. Rhitoja

Hi, are there any solution for these questions? If yes please do share the link

1. lavanya
1. Lalith

are there answers for the questions given above?

3. A K Aarathana

please give the solutions for the questions above. although it was very helpful. thank you.

1. lavanya
4. EkampreetKaur

Byjus is really very helpful for studies. It enables us to understand instead of craming. It is true that the teachers are Rockstars. Thank you Byjus.

5. aarushi tripathi

6. nidhi

where are the answers for the important questions???

7. Sangam singh

Question of class 9 math chapter 1

8. huney

9. Jigyasha

Thx a lot,it is very helpful for me.

10. NikhilSinghRajput

Pls upload exemplar questions like science

11. Digvijay Singh Thakur

12. monisha

sir please give solution for this

13. SREELEKSHMIJ

It is use full

14. R.vishal krishnan

Thank you so much.It is very useful for my exam.👍👍👍

15. Shivanshi