CBSE Board Practice

CBSE Grade VIII - Algebraic Expressions and Identities
Question 1
1.
    • The value of
    • (
      3
      f
      +
      6
      )
    • (
      9
      f
      g
      +
      4
      g
      )
    • (
      7
      f
      +
      g
      )
    • is
  • (
    189
    f
    3
     
    g
    +
    27
    f
    2
     
    g
    2
     
    +
    462
    f
    2
     
    g
    66
    f
    g
    2
     
    168
    f
    g
    +
    24
    g
    2
     
    )
  • (
    189
    f
    3
     
    g
    +
    29
    f
    2
     
    g
    2
     
    +
    462
    f
    2
     
    g
    66
    f
    g
    2
     
    168
    f
    g
    +
    24
    g
    2
     
    )
  • (
    189
    f
    3
     
    g
    +
    25
    f
    2
     
    g
    2
     
    +
    462
    f
    2
     
    g
    66
    f
    g
    2
     
    168
    f
    g
    +
    24
    g
    2
     
    )
  • (
    190
    f
    3
     
    g
    +
    27
    f
    2
     
    g
    2
     
    +
    462
    f
    2
     
    g
    66
    f
    g
    2
     
    168
    f
    g
    +
    24
    g
    2
     
    )
  • (
    188
    f
    3
     
    g
    +
    27
    f
    2
     
    g
    2
     
    +
    462
    f
    2
     
    g
    66
    f
    g
    2
     
    168
    f
    g
    +
    24
    g
    2
     
    )
Question 2
2.
    • The value of
    • 3

      4
      e
    • 1

      2
      e
    • is
  • 3

    8
    e
    2
     
  • 3

    10
    e
    2
     
  • 1

    2
    e
    2
     
  • 1

    8
    e
    2
     
  • 5

    8
    e
    2
     
Question 3
3.
    • The value of
    • (
      5
      t
      6
      )
    • (
      8
      t
      9
      )
    • is
  • (
    43
    t
    2
     
    93
    t
    +
    54
    )
  • (
    41
    t
    2
     
    93
    t
    +
    54
    )
  • (
    40
    t
    2
     
    93
    t
    +
    54
    )
  • (
    39
    t
    2
     
    93
    t
    +
    54
    )
  • (
    37
    t
    2
     
    93
    t
    +
    54
    )
Question 4
4.
    • Which of the following terms can be added to
    • 2
    • ?
  • (
    6
    z
    3
     
    )
  • 4
    z
  • (
    4
    z
    2
     
    )
  • 9
    z
    4
     
  • 1
Question 5
5.
    • The value of
    • 9
      n
      o
    • +
    • 6
      n
      o
    • is
  • 15
    n
    o
  • 18
    n
    o
  • 12
    n
    o
  • 14
    n
    o
  • 16
    n
    o
Question 6
6.
    • Which of the following terms is a like term of
    • 5
      v
      4
       
    • ?
  • 4
    v
    4
     
  • (
    7
    )
  • 7
    v
    2
     
  • (
    8
    v
    )
  • 8
    v
    3
     
Question 7
7.
    • The value of
    • 1

      3
      z
    • +
    • 2

      3
      z
    • +
    • 2

      3
      z
    • +
    • 1

      3
      z
    • is
  • z
  • 2
    z
  • 3
    z
  • (
    z
    )
  • 4
    z
Question 8
8.
    • The value of
    • (
      8
      a
      )
    • +
    • (
      4
      a
      )
    • is
  • (
    14
    a
    )
  • (
    12
    a
    )
  • (
    11
    a
    )
  • (
    9
    a
    )
  • (
    13
    a
    )
Question 9
9.
Which of the following algebraic expressions is a zero polynomial?
  • (
    6
    x
    3
     
    y
    2
     
    5
    x
    2
     
    y
    2
     
    z
    2
     
    5
    x
    y
    3
     
    z
    2
     
    )
  • (
    2
    x
    2
     
    y
    3
     
    z
    3
     
    )
  • 0
  • (
    2
    x
    y
    2
     
    z
    3
     
    7
    y
    z
    3
     
    )
  • (
    5
    x
    3
     
    5
    x
    2
     
    y
    3
     
    z
    3
    x
    2
     
    y
    3
     
    +
    7
    x
    z
    2
     
    )
Question 10
10.
    • The value of
    • 92
    • 91
    • is
  • 8371
  • 8370
  • 8372
  • 8375
  • 8373