ICSE Board Practice

ICSE Grade IX - Rational and Irrational Numbers
Question 1
1.
Which of the following is true?
  • 4

    15
    >
    7

    15
  • 1

    4
    >
    10

    16
  • 7

    14
    <
    1

    12
  • 3

    12
    <
    3

    14
  • 2

    15
    >
    1

    11
Question 2
2.
    • (
      4
      3
      √


      2
      +
      2
      3
      √


      7
      −
      5
      3
      √


      5
      )
    • +
    • (
      −
      6
      3
      √


      3
      +
      9
      3
      √


      6
      +
      3
      √


      8
      )
    • =
  • (
    4
    3
    √


    2
    +
    2
    5
    √


    7
    −
    5
    3
    √


    5
    −
    6
    3
    √


    3
    +
    9
    3
    √


    6
    +
    3
    √


    8
    )
  • (
    4
    3
    √


    2
    +
    2
    3
    √


    7
    −
    5
    3
    √


    5
    −
    6
    3
    √


    3
    +
    9
    3
    √


    6
    +
    3
    √


    8
    )
  • (
    4
    3
    √


    2
    +
    2
    3
    √


    7
    −
    5
    3
    √


    5
    −
    6
    3
    √


    5
    +
    9
    3
    √


    6
    +
    3
    √


    8
    )
  • (
    4
    3
    √


    2
    +
    2
    3
    √


    7
    −
    5
    5
    √


    5
    −
    6
    3
    √


    3
    +
    9
    3
    √


    6
    +
    3
    √


    8
    )
  • (
    4
    3
    √


    1

    2
    +
    2
    3
    √


    7
    −
    5
    3
    √


    5
    −
    6
    3
    √


    3
    +
    9
    3
    √


    6
    +
    3
    √


    8
    )
Question 3
3.
Find the sum of the decimal numbers at the points labelled with letters X and Y
  • 8
  • 8.5
  • 8.4
  • 8.3
  • 7.7
Question 4
4.
    • 8
      √


      3

      8
      √


      2
    • =
  • 10
    √


    3

    2
  • 8
    √


    3

    2
  • 8
    √


    1

    2
  • 6
    √


    3

    2
  • 8
    √


    5

    2
Question 5
5.
    • Express
    • 35

      39
    • as a decimal correct to 2 decimal places
  • 0.7
  • 8.97
  • 0.09
  • 1
  • 0.9
Question 6
6.
    • (
      1

      2
      )
      7
         
           
    • =
  • 7

  • √


    9

  • √


    5

  • √


    7
  • 1
    √


    2 7
     
Question 7
7.
Find the position of the decimal number 2.9 on the number line
  • I
  • F
  • S
  • R
  • L
Question 8
8.
6.26 =
  • 313

    50
  • 313

    5000
  • 313

    5
  • 313

    500
  • 626
Question 9
9.
    • 16
      √


      10
    • ✕
    • 16
      √


      6
    • =
  • 16
    √


    63
  • 14
    √


    60
  • 16
    √


    60
  • 18
    √


    60
  • 16
    √


    57
Question 10
10.
    • Express
    • 3

      17
    • as a decimal correct to 2 decimal places
  • 0.02
  • 0.28
  • 1.76
  • -0.02
  • 0.18