EduSahara™ Assignment
Name : Rational Numbers and their Decimal Expansions
Chapter : Number Systems
Grade : CBSE Grade IX
License : Non Commercial Use
Question 1
1.
    • The recurring part of the decimal
    • 30.
      523809
    • is
  • (i)
    523809523809
  • (ii)
    5238095523809
  • (iii)
    30.523809
  • (iv)
    52380953
  • (v)
    523809
Question 2
2.
    • The recurring part of the decimal
    • 9.29629629629629...
    • is
  • (i)
    296
  • (ii)
    29629
  • (iii)
    296296
  • (iv)
    9.296
  • (v)
    2962296
Question 3
3.
    • Convert the non-terminating recurring decimal
    • 29.
      8
    • to rational number
  • (i)
    269

    9
  • (ii)
    269

    7
  • (iii)
    89

    3
  • (iv)
    271

    9
  • (v)
    269

    11
Question 4
4.
    • Convert the non-terminating recurring decimal
    • 18.59259259259259...
    • to rational number
  • (i)
    502

    27
  • (ii)
    56

    3
  • (iii)
    502

    25
  • (iv)
    502

    29
  • (v)
    500

    27
Question 5
5.
    • Convert the fraction
    • 290

      21
    • to non-terminating recurring decimal
  • (i)
    13.
    809523
  • (ii)
    0.1
    380952
  • (iii)
    1380.
    952380
  • (iv)
    138.
    095238
  • (v)
    1.
    380952
Question 6
6.
    • Convert the fraction
    • 208

      9
    • to non-terminating recurring decimal
  • (i)
    2311.
    1
  • (ii)
    2.3
    1
  • (iii)
    0.23
    1
  • (iv)
    23.
    1
  • (v)
    231.
    1
Question 7
7.
Which of the following fractions converts to a non-terminating recurring decimal?
  • (i)
    6400

    80
  • (ii)
    81

    1
  • (iii)
    3744

    32
  • (iv)
    125

    9
  • (v)
    160

    1
Question 8
8.
Which of the following fractions converts to a terminating decimal?
  • (i)
    94

    9
  • (ii)
    1848

    80
  • (iii)
    1

    3
  • (iv)
    47

    90
  • (v)
    188

    117
Question 9
9.
    • Which of the following is an irrational number?
  • (i)
    4

    19
  • (ii)
    0.3333
  • (iii)
    (-10)
  • (iv)
    4
  • (v)



    47
Question 10
10.
    • Which of the following is a rational number?
  • (i)
    3


    51
  • (ii)
    12

    20
  • (iii)
    3


    47
  • (iv)



    57
  • (v)



    91
Question 11
11.
    • Express
    • 9

      10
    • as a decimal correct to 1 decimal places
  • (i)
    0.7
  • (ii)
    0.9
  • (iii)
    9
  • (iv)
    1
  • (v)
    0.1
Question 12
12.
    • Express
    • 77

      100
    • as a decimal correct to 2 decimal places
  • (i)
    0.77
  • (ii)
    0.57
  • (iii)
    0.08
  • (iv)
    0.87
  • (v)
    7.7
Question 13
13.
    • Express
    • 701

      1000
    • as a decimal correct to 3 decimal places
  • (i)
    0.801
  • (ii)
    7.01
  • (iii)
    0.07
  • (iv)
    0.501
  • (v)
    0.701
Question 14
14.
    • Express
    • 9483

      10000
    • as a decimal correct to 4 decimal places
  • (i)
    0.0948
  • (ii)
    1.0483
  • (iii)
    0.9483
  • (iv)
    9.483
  • (v)
    0.7483
Question 15
15.
5.9 =
  • (i)
    59

    10
  • (ii)
    59
  • (iii)
    59

    1000
  • (iv)
    59

    100
  • (v)
    590
Question 16
16.
1.9 =
  • (i)
    19
  • (ii)
    19

    10
  • (iii)
    19

    1000
  • (iv)
    190
  • (v)
    19

    100
Question 17
17.
19.37 =
  • (i)
    1937

    1000
  • (ii)
    1937
  • (iii)
    1937

    10
  • (iv)
    1937

    10000
  • (v)
    1937

    100
Question 18
18.
10.720 =
  • (i)
    536

    5
  • (ii)
    67

    625
  • (iii)
    134

    125
  • (iv)
    1072
  • (v)
    268

    25
Question 19
19.
10.9 =
  • (i)
    1090
  • (ii)
    109

    10
  • (iii)
    109

    1000
  • (iv)
    109

    100
  • (v)
    109
Question 20
20.
4.19 =
  • (i)
    419
  • (ii)
    419

    100
  • (iii)
    419

    10000
  • (iv)
    419

    1000
  • (v)
    419

    10
Question 21
21.
10.25 =
  • (i)
    41

    40
  • (ii)
    1025
  • (iii)
    205

    2
  • (iv)
    41

    400
  • (v)
    41

    4
Question 22
22.
8.271 =
  • (i)
    8271

    100
  • (ii)
    8271

    10000
  • (iii)
    8271

    10
  • (iv)
    8271

    1000
  • (v)
    8271

    100000
Question 23
23.
Which of the following symbols represent the set of Natural numbers ?
  • (i)
    Q
  • (ii)
    Q'
  • (iii)
    R
  • (iv)
    Z
  • (v)
    N
Question 24
24.
Which of the following symbols represent the set of Whole numbers ?
  • (i)
    R
  • (ii)
    N
  • (iii)
    Q'
  • (iv)
    Z
  • (v)
    W
Question 25
25.
Which of the following symbols represent the set of Integers ?
  • (i)
    Q
  • (ii)
    N
  • (iii)
    R
  • (iv)
    Z
  • (v)
    Q'
Question 26
26.
Which of the following symbols represent the set of Rational numbers ?
  • (i)
    Z
  • (ii)
    Q
  • (iii)
    W
  • (iv)
    Q'
  • (v)
    R
Question 27
27.
Which of the following symbols represent the set of Irrational numbers ?
  • (i)
    R
  • (ii)
    Q'
  • (iii)
    W
  • (iv)
    N
  • (v)
    Q
Question 28
28.
Which of the following symbols represent the set of Real numbers ?
  • (i)
    Q
  • (ii)
    Z
  • (iii)
    R
  • (iv)
    W
  • (v)
    N
    Assignment Key

  •  1) (v)
  •  2) (i)
  •  3) (i)
  •  4) (i)
  •  5) (i)
  •  6) (iv)
  •  7) (iv)
  •  8) (ii)
  •  9) (v)
  •  10) (ii)
  •  11) (ii)
  •  12) (i)
  •  13) (v)
  •  14) (iii)
  •  15) (i)
  •  16) (ii)
  •  17) (v)
  •  18) (v)
  •  19) (ii)
  •  20) (ii)
  •  21) (v)
  •  22) (iv)
  •  23) (v)
  •  24) (v)
  •  25) (iv)
  •  26) (ii)
  •  27) (ii)
  •  28) (iii)