CBSE Board Practice

CBSE Grade IX - Number Systems
Question 1
1.
Which of the following symbols represent the set of Whole numbers ?
  • Q'
  • R
  • N
  • W
  • Q
Question 2
2.
    • Convert the non-terminating recurring decimal
    • 15.
      8
    • to rational number
  • 47

    3
  • 143

    9
  • 13
  • 145

    9
  • 143

    7
Question 3
3.
    • The value of
    •    
      3
      (
      -1

      3
      )
           
    • ÷
    •    
      3
      (
      5

      3
      )
           
  •    
    2
    (
    -1

    125
    )
         
  • 1

    125
  • (
    -3

    125
    )
  • (
    -1

    125
    )
  • (
    -1

    123
    )
Question 4
4.
    • (
      4



      5
      8



      9
      2



      6
      )
    • (
      6



      6
      9



      7
      )
    • =
  • (
    4



    5
    30



    6
    +
    9



    7
    )
  • (
    4



    3
    30



    6
    +
    9



    7
    )
  • (
    4



    5
    30



    6
    +
    9



    9
    )
  • (
    4



    5
    29



    6
    +
    9



    7
    )
  • (
    4



    5
    30
    4


    6
    +
    9



    7
    )
Question 5
5.
    • Simplify the expression
    • (
      9

      7
      )
      2
         
           
    • (
      9

      7
      )
      2
         
           
    • (
      9

      7
      )
      2
         
           
  • (
    27

    7
    )
    5
       
         
  • (
    21

    5
    )
    2
       
         
  • (
    11

    3
    )
    2
       
         
  • (
    25

    7
    )
    2
       
         
  • (
    27

    7
    )
    2
       
         
Question 6
6.
    • Express
    • 6327

      10000
    • as a decimal correct to 4 decimal places
  • 0.7327
  • 0.0633
  • 0.4327
  • 6.327
  • 0.6327
Question 7
7.
    • 4


      5 9
       
    • =
  • (
    9

    4
    )
    5
       
         
  • (
    9

    4
    )
    8
       
         
  • (
    4

    9
    )
    5
       
         
  • (
    9

    4
    )
    2
       
         
  • (
    9

    2
    )
    5
       
         
Question 8
8.
Find the difference of the rational numbers at the points labelled with letters G and H
  • (
    -1

    2
    )
  • (
    -7

    12
    )
  • (
    -7

    8
    )
  • (
    -7

    10
    )
  • (
    -9

    10
    )
Question 9
9.
    • (
      9



      8
      )
    • (
      4



      8
      )
    • =
  • (
    10



    -1
    )
  • (
    20
    )
  • (
    10



    4
    )
  • (
    10
    4


    2
    )
  • (
    10



    2
    )
Question 10
10.
3.1 =
  • 31

    10
  • 31

    100
  • 31
  • 310
  • 31

    1000