 # Important Questions Class 9 Maths Chapter 1 Number System

Important questions for Class 9 Maths Chapter 1 Number system is given here. These practice questions will help the students to have a better understanding of 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 given for 9th class students which 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.

Q.2: Find five rational numbers between 3/5 and 4/5.

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… = 0.3-  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.

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

Q.10: Add 22+ 53 and 2 – 33.

Q.11: Simplify: (√3+√7) (√3-√7).

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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