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.

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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
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21 Comments

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

      1. are there answers for the questions given above?

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

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  6. where are the answers for the important questions???

  7. Question of class 9 math chapter 1

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  10. NikhilSinghRajput

    Pls upload exemplar questions like science

  11. Digvijay Singh Thakur

    Sir please give the sample paper for class 9th best month I have to prepare for my exam please help me sir

  12. sir please give solution for this

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  15. Where are the answers

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