ICSE Board Practice

Class VI Class VII Class VIII Class IX Class X
ICSE Grade IX - Rational and Irrational Numbers
Question 1
1.
2.1 =
  • 21
  • 21
    10
  • 210
  • 21
    100
  • 21
    1000
Question 2
2.
    • (
      −
      8
      3
      √

      7
      +
      9
      3
      √

      9
      −
      5
      3
      √

      6
      )
    • −
    • (
      −
      5
      3
      √

      7
      −
      8

      √

      2
      −
      3
      3
      √

      4
      )
    • =
  • (
    −
    3
    3
    √

    4
    +
    9
    3
    √

    9
    −
    5
    3
    √

    6
    +
    8

    √

    2
    +
    3
    3
    √

    4
    )
  • (
    −
    3
    3
    √

    7
    +
    9
    3
    √

    9
    −
    5
    3
    √

    6
    +
    8

    √

    5
    +
    3
    3
    √

    4
    )
  • (
    −
    3
    3
    √

    7
    +
    9
    5
    √

    9
    −
    5
    3
    √

    6
    +
    8

    √

    2
    +
    3
    3
    √

    4
    )
  • (
    −
    3
    3
    √

    7
    +
    9
    3
    √

    9
    −
    5
    5
    √

    6
    +
    8

    √

    2
    +
    3
    3
    √

    4
    )
  • (
    −
    3
    3
    √

    7
    +
    9
    3
    √

    9
    −
    5
    3
    √

    6
    +
    8

    √

    2
    +
    3
    3
    √

    4
    )
Question 3
3.
    • Express
    • 71
      100
    • as a decimal correct to 2 decimal places
  • 0.07
  • 0.51
  • 0.81
  • 0.71
  • 7.1
Question 4
4.
The decimal number 28.3 lies between
  • {30,31}
  • {28,29}
  • {29,30}
  • {27,28}
  • {26,27}
Question 5
5.
19.23 =
  • 1923
    100
  • 1923
    1000
  • 1923
  • 1923
    10
  • 1923
    10000
Question 6
6.
    • 6

      √

      2
    • ÷
    • (
      −
      8

      √

      9
      )
    • =
  • (
    −
    1
    4

    √

    1
    2
    )
  • (
    −
    1
    4

    √

    2
    )
  • (
    −
    1
    2
    )
  • (
    −
    1
    4

    √

    4
    )
  • (
    −
    1
    4
    4
    √

    2
    )
Question 7
7.
18.56 =
  • 116
    625
  • 928
    5
  • 464
    25
  • 232
    125
  • 1856
Question 8
8.
Find the sum of the decimal numbers at the points labelled with letters E and F
  • 9.6
  • 9.7
  • 9.3
  • 8.9
  • 9.1
Question 9
9.
Which of the following symbols represent the set of Real numbers ?
  • N
  • W
  • R
  • Q
  • Q'
Question 10
10.
Which of the following is a pure recurring decimal?
  • 7.61111111111111...
  • 9.77777777777777...
  • 3.94444444444444...
  • 25.27777777777777...
  • 23.72222222222222...