# 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:Â Find five rational numbers between 1 and 2.

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

Q.3:Â Locate âˆš3 on the number line.

Q.4:Â 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:Â Find the decimal expansions of 10/3, 7/8 and 1/7.

Q.6:Â Show that 0.3333… = 0.3-Â  can be expressed in the form p/q, where p and q are integers andÂ q â‰  0.

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

Q.8:Â Find three different irrational numbers between the rational numbers 5/7 and 9/11.

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

Q.10:Â Add 2âˆš2+ 5âˆš3 and âˆš2 – 3âˆš3.

Q.11: Simplify: (âˆš3+âˆš7) (âˆš3-âˆš7).

Q.12: Rationalise the denominator of 1/[7+3âˆš3].

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

Q.14: Simplify:

(i)72/3.71/5
(ii)101/2/101/4
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