CBSE Board Practice

CBSE Grade IX - Number Systems
Question 1
1.
    • 7



      9
    • 8



      9
    • =
  • (
    1
    )
  • (
    4
    )
  • (
    3
    )
  • (
    5
    )
  • (
    2
    )
Question 2
2.
Find the difference of the rational numbers at the points labelled with letters G and H
  • (
    -1

    5
    )
  • (
    -3

    5
    )
  • (
    -3

    7
    )
  • -1
Question 3
3.
    • Simplify the expression
    •    
      (
      8/3
      )
      (
      -7

      8
      )
         
               
    •    
      (
      8/3
      )
      (
      -7

      3
      )
         
               
  •    
    (
    8/3
    )
    (
    47

    24
    )
       
             
  •    
    (
    8/5
    )
    (
    49

    24
    )
       
             
  •    
    (
    8/3
    )
    (
    49

    24
    )
       
             
  •    
    (
    8/3
    )
    (
    17

    8
    )
       
             
  •    
    8
    (
    49

    24
    )
         
Question 4
4.
    • The equivalent fraction of
    • 9

      7
    • is
  • 44

    35
  • 44

    34
  • 46

    36
  • 45

    35
  • 46

    34
Question 5
5.
    • Simplify
    • 2 2
       
      (-3) 2
       

      (-5) -2
       
      3 -2
       
  • 90 3
     
  • 88 2
     
  • 90
  • 90 2
     
  • 93 2
     
Question 6
6.
Find the difference of the rational numbers at the points labelled with letters F and G
  • (
    -7

    8
    )
  • (
    -7

    10
    )
  • (
    -9

    10
    )
  • (
    -1

    2
    )
  • (
    -7

    12
    )
Question 7
7.
15.43 =
  • 1543

    10000
  • 1543

    1000
  • 1543

    100
  • 1543

    10
  • 1543
Question 8
8.
    • Expand the following base power
    •    
      -4
      (
      -3

      4
      )
           
  • (
    -1024

    243
    )
  • 256
  • 256

    625
  • 256

    81
  • (
    -64

    27
    )
Question 9
9.
    • The value of
    •    
      2
      (
      -4

      3
      )
           
    •    
      2
      (
      -1

      3
      )
           
  • 14

    81
  •    
    2
    (
    16

    81
    )
         
  • 16

    81
  • 16

    79
  • 2

    9
Question 10
10.
    • If



      • 2
        = 1.4142,



      • 3
        = 1.7321,



      • 5
        = 2.2361,



      • 7
        = 2.6458,
    • the value of
    • (
      7



      4
      4



      5
      +
      2



      2
      )
    • =
  • -20.116
  • -9.116
  • -12.116
  • -13.116