Real Numbers - Important Question Paper

9th Standard

    Reg.No. :
  •  
  •  
  •  
  •  
  •  
  •  

Maths

Time : 01:00:00 Hrs
Total Marks : 50

    Part A

    10 x 1 = 10
  1. If n is a natural number then \(\sqrt { n } \) is

    (a)

    always a natural number

    (b)

    always an irrational number

    (c)

    always a rational number

    (d)

    may be rational or irrational

  2. Which of the following is not true?

    (a)

    Every rational number is a real number

    (b)

    Every integer is a rational number

    (c)

    Every real number is an irrational number

    (d)

    Every natural number is a whole number

  3. Which one of the following, regarding sum of two irrational numbers, is true?

    (a)

    always an irrational number

    (b)

    may be a rational or irrational number

    (c)

    always a rational number

    (d)

    always an integer.

  4. Which one of the following has a terminating decimal expansion?

    (a)

    \(\frac { 5 }{ 64 } \)

    (b)

    \(\frac { 8 }{ 9 } \)

    (c)

    \(\frac { 14 }{ 15 } \)

    (d)

    \(\frac { 1 }{ 12 } \)

  5. Find the odd one out of the following

    (a)

    \(\sqrt { 32 } \times \sqrt { 2 } \)

    (b)

    \(\frac { \sqrt { 27 } }{ \sqrt { 3 } } \)

    (c)

    \(\sqrt { 72 } \times \sqrt { 8 } \)

    (d)

    \(\frac { \sqrt { 54 } }{ \sqrt { 18 } } \)

  6. \(0.\overline { 34 } +0.3\bar { 4 } \) = 

    (a)

    \(0.6\overline { 87 } \)

    (b)

    \(0.\overline { 68 } \)

    (c)

    \(0.6\bar { 8 } \)

    (d)

    \(0.68\bar { 7 } \)

  7. The decimal form of -\(\frac { 3 }{ 4 } \) is_______________

    (a)

    - 0.75

    (b)

    - 0.50

    (c)

    -0.25

    (d)

    - 0.125

  8. If a number has a non-terminating and non-recurring decimal expansion, then it is______________ .

    (a)

    a rational number

    (b)

    a natural number

    (c)

    an irrational number

    (d)

    an integer

  9. Irrational number has a________________ .

    (a)

    terminating decimal

    (b)

    no decimal part

    (c)

    non-terminating and recurring decimal

    (d)

    non-terminating and non-recurring decimal

  10. If \(\frac { 1 }{ 7 } \)= 0.142857, then the value of is______________.

    (a)

    0.285741

    (b)

    0.428571

    (c)

    0.285714

    (d)

    0.574128

  11. Part B

    6 x 2 = 12
  12. Express the following in the form \({p\over q},\) where p and q are integers and q \(\ne\) 0.
    \(0.\overline {47}\)

  13. Part C

    6 x 3 = 18
  14. Express the following decimal expression into rational numbers. \(0.\overline { 24 } \)

  15. Express the following decimal expression into rational numbers. \(2.\overline { 327 } \)

  16. Express the following decimal expression into rational numbers \(3.1\overline { 7 } \)

  17. Express the following decimal expression into rational numbers \(17.2\overline { 15 } \)

  18. Express the following decimal expression into rational numbers \(0.\overline { 0001 } \)

  19. Part D

    2 x 5 = 10
  20. Find any  seven rational numbers between \(\frac { 5 }{ 8 } \) and \(\frac { 5 }{ 6 } \)

  21. Find any three rational numbers between \(\frac { 1 }{ 2 } \) and \(\frac { 1 }{ 5 } \)

*****************************************

Reviews & Comments about Real Numbers Important Question Paper In 9th Maths

Write your Comment