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
    • 22.
      2
    • is
  • (i)
    22.2
  • (ii)
    2
  • (iii)
    22
  • (iv)
    222
Question 2
2.
    • The recurring part of the decimal
    • 28.80952380952381...
    • is
  • (i)
    80952382
  • (ii)
    809523809523
  • (iii)
    28.809523
  • (iv)
    809523
  • (v)
    8095238809523
Question 3
3.
    • Convert the non-terminating recurring decimal
    • 8.
      851
    • to rational number
  • (i)
    239

    25
  • (ii)
    239

    29
  • (iii)
    241

    27
  • (iv)
    79

    9
  • (v)
    239

    27
Question 4
4.
    • Convert the non-terminating recurring decimal
    • 18.94444444444444...
    • to rational number
  • (i)
    341

    18
  • (ii)
    341

    20
  • (iii)
    343

    18
  • (iv)
    341

    16
  • (v)
    113

    6
Question 5
5.
    • Convert the fraction
    • 67

      27
    • to non-terminating recurring decimal
  • (i)
    2.
    481
  • (ii)
    248.
    148
  • (iii)
    0.02
    481
  • (iv)
    0.2
    481
  • (v)
    24.
    814
Question 6
6.
    • Convert the fraction
    • 143

      21
    • to non-terminating recurring decimal
  • (i)
    0.06
    809523
  • (ii)
    680.
    952380
  • (iii)
    6.
    809523
  • (iv)
    0.6
    809523
  • (v)
    68.
    095238
Question 7
7.
Which of the following fractions converts to a non-terminating recurring decimal?
  • (i)
    119

    5
  • (ii)
    228

    5
  • (iii)
    4560

    200
  • (iv)
    5700

    50
  • (v)
    94

    9
Question 8
8.
Which of the following fractions converts to a terminating decimal?
  • (i)
    172

    9
  • (ii)
    344

    99
  • (iii)
    3876

    200
  • (iv)
    289

    18
  • (v)
    43

    45
Question 9
9.
    • Which of the following is an irrational number?
  • (i)
    14.7778
  • (ii)
    3


    13
  • (iii)
    2
  • (iv)
    19

    29
Question 10
10.
    • Which of the following is a rational number?
  • (i)
    3


    28
  • (ii)
    3


    39
  • (iii)



    10
  • (iv)
    1

    2
  • (v)
    3


    84
Question 11
11.
    • Express
    • 3

      10
    • as a decimal correct to 1 decimal places
  • (i)
    0.1
  • (ii)
    0
  • (iii)
    0.4
  • (iv)
    0.3
  • (v)
    3
Question 12
12.
    • Express
    • 29

      100
    • as a decimal correct to 2 decimal places
  • (i)
    0.03
  • (ii)
    0.39
  • (iii)
    0.09
  • (iv)
    2.9
  • (v)
    0.29
Question 13
13.
    • Express
    • 211

      1000
    • as a decimal correct to 3 decimal places
  • (i)
    0.211
  • (ii)
    0.311
  • (iii)
    2.11
  • (iv)
    0.021
  • (v)
    0.011
Question 14
14.
    • Express
    • 9901

      10000
    • as a decimal correct to 4 decimal places
  • (i)
    1.0901
  • (ii)
    0.7901
  • (iii)
    0.099
  • (iv)
    9.901
  • (v)
    0.9901
Question 15
15.
4.4 =
  • (i)
    11

    25
  • (ii)
    22

    5
  • (iii)
    440
  • (iv)
    44
  • (v)
    11

    250
Question 16
16.
4.1 =
  • (i)
    41

    1000
  • (ii)
    410
  • (iii)
    41
  • (iv)
    41

    10
  • (v)
    41

    100
Question 17
17.
19.72 =
  • (i)
    986

    5
  • (ii)
    1972
  • (iii)
    493

    250
  • (iv)
    493

    2500
  • (v)
    493

    25
Question 18
18.
4.107 =
  • (i)
    4107

    10
  • (ii)
    4107

    100
  • (iii)
    4107

    100000
  • (iv)
    4107

    10000
  • (v)
    4107

    1000
Question 19
19.
1.6 =
  • (i)
    2

    125
  • (ii)
    16
  • (iii)
    8

    5
  • (iv)
    4

    25
  • (v)
    160
Question 20
20.
9.13 =
  • (i)
    913

    1000
  • (ii)
    913

    100
  • (iii)
    913

    10000
  • (iv)
    913
  • (v)
    913

    10
Question 21
21.
18.55 =
  • (i)
    371

    20
  • (ii)
    371

    2
  • (iii)
    371

    2000
  • (iv)
    1855
  • (v)
    371

    200
Question 22
22.
8.325 =
  • (i)
    333

    4
  • (ii)
    1665

    2
  • (iii)
    333

    400
  • (iv)
    333

    40
  • (v)
    333

    4000
Question 23
23.
Which of the following symbols represent the set of Natural numbers ?
  • (i)
    Z
  • (ii)
    N
  • (iii)
    Q'
  • (iv)
    R
  • (v)
    Q
Question 24
24.
Which of the following symbols represent the set of Whole numbers ?
  • (i)
    R
  • (ii)
    Z
  • (iii)
    W
  • (iv)
    Q'
  • (v)
    N
Question 25
25.
Which of the following symbols represent the set of Integers ?
  • (i)
    N
  • (ii)
    Z
  • (iii)
    Q
  • (iv)
    R
  • (v)
    Q'
Question 26
26.
Which of the following symbols represent the set of Rational numbers ?
  • (i)
    W
  • (ii)
    Z
  • (iii)
    Q
  • (iv)
    Q'
  • (v)
    R
Question 27
27.
Which of the following symbols represent the set of Irrational numbers ?
  • (i)
    Q'
  • (ii)
    R
  • (iii)
    Z
  • (iv)
    Q
  • (v)
    N
Question 28
28.
Which of the following symbols represent the set of Real numbers ?
  • (i)
    Q'
  • (ii)
    Q
  • (iii)
    Z
  • (iv)
    R
  • (v)
    W
    Assignment Key

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