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
    • 0.
      3
    • is
  • (i)
    3
  • (ii)
    0.3
  • (iii)
    33
  • (iv)
    333
  • (v)
    330
Question 2
2.
    • The recurring part of the decimal
    • 20.44444444444444...
    • is
  • (i)
    442
  • (ii)
    4
  • (iii)
    444
  • (iv)
    44
  • (v)
    20.4
Question 3
3.
    • Convert the non-terminating recurring decimal
    • 24.
      1
    • to rational number
  • (i)
    215

    9
  • (ii)
    217

    11
  • (iii)
    31
  • (iv)
    217

    9
  • (v)
    73

    3
Question 4
4.
    • Convert the non-terminating recurring decimal
    • 8.80952380952381...
    • to rational number
  • (i)
    61

    7
  • (ii)
    185

    23
  • (iii)
    187

    21
  • (iv)
    185

    19
  • (v)
    185

    21
Question 5
5.
    • Convert the fraction
    • 265

      18
    • to non-terminating recurring decimal
  • (i)
    1472.
    2
  • (ii)
    1.47
    2
  • (iii)
    0.147
    2
  • (iv)
    147.
    2
  • (v)
    14.7
    2
Question 6
6.
    • Convert the fraction
    • 535

      18
    • to non-terminating recurring decimal
  • (i)
    297.
    2
  • (ii)
    2972.
    2
  • (iii)
    0.
    2
  • (iv)
    29.7
    2
  • (v)
    2.97
    2
Question 7
7.
Which of the following fractions converts to a non-terminating recurring decimal?
  • (i)
    4212

    8
  • (ii)
    1055

    2
  • (iii)
    1053

    1
  • (iv)
    253

    18
  • (v)
    2184

    256
Question 8
8.
Which of the following fractions converts to a terminating decimal?
  • (i)
    307

    18
  • (ii)
    331

    18
  • (iii)
    331

    117
  • (iv)
    1980

    160
  • (v)
    331

    288
Question 9
9.
    • Which of the following is an irrational number?
  • (i)
    2.8889
  • (ii)
    (-5)
  • (iii)
    3


    37
  • (iv)
    6

    7
  • (v)
    27
Question 10
10.
    • Which of the following is a rational number?
  • (i)



    77
  • (ii)



    14
  • (iii)



    43
  • (iv)
    1

    5
  • (v)
    3


    89
Question 11
11.
    • Express
    • 7

      10
    • as a decimal correct to 1 decimal places
  • (i)
    0.8
  • (ii)
    0.5
  • (iii)
    0.7
  • (iv)
    7
  • (v)
    0.1
Question 12
12.
    • Express
    • 13

      100
    • as a decimal correct to 2 decimal places
  • (i)
    -0.07
  • (ii)
    0.13
  • (iii)
    0.23
  • (iv)
    1.3
  • (v)
    0.01
Question 13
13.
    • Express
    • 627

      1000
    • as a decimal correct to 3 decimal places
  • (i)
    0.627
  • (ii)
    0.427
  • (iii)
    0.727
  • (iv)
    6.27
  • (v)
    0.063
Question 14
14.
    • Express
    • 8277

      10000
    • as a decimal correct to 4 decimal places
  • (i)
    8.277
  • (ii)
    0.0828
  • (iii)
    0.9277
  • (iv)
    0.6277
  • (v)
    0.8277
Question 15
15.
9.7 =
  • (i)
    97

    100
  • (ii)
    97

    10
  • (iii)
    97

    1000
  • (iv)
    970
  • (v)
    97
Question 16
16.
5.8 =
  • (i)
    580
  • (ii)
    58
  • (iii)
    29

    500
  • (iv)
    29

    50
  • (v)
    29

    5
Question 17
17.
12.80 =
  • (i)
    32

    25
  • (ii)
    64

    5
  • (iii)
    16

    125
  • (iv)
    1280
  • (v)
    128
Question 18
18.
8.363 =
  • (i)
    8363

    100
  • (ii)
    8363

    100000
  • (iii)
    8363

    1000
  • (iv)
    8363

    10000
  • (v)
    8363

    10
Question 19
19.
5.5 =
  • (i)
    11

    200
  • (ii)
    11

    20
  • (iii)
    550
  • (iv)
    11

    2
  • (v)
    55
Question 20
20.
7.14 =
  • (i)
    357

    500
  • (ii)
    357

    50
  • (iii)
    357

    5000
  • (iv)
    714
  • (v)
    357

    5
Question 21
21.
3.80 =
  • (i)
    38
  • (ii)
    19

    5
  • (iii)
    380
  • (iv)
    19

    50
  • (v)
    19

    500
Question 22
22.
4.647 =
  • (i)
    4647

    100000
  • (ii)
    4647

    10000
  • (iii)
    4647

    10
  • (iv)
    4647

    1000
  • (v)
    4647

    100
Question 23
23.
Which of the following symbols represent the set of Natural numbers ?
  • (i)
    W
  • (ii)
    Z
  • (iii)
    Q'
  • (iv)
    N
  • (v)
    Q
Question 24
24.
Which of the following symbols represent the set of Whole numbers ?
  • (i)
    Q'
  • (ii)
    N
  • (iii)
    Q
  • (iv)
    W
  • (v)
    Z
Question 25
25.
Which of the following symbols represent the set of Integers ?
  • (i)
    Z
  • (ii)
    N
  • (iii)
    Q
  • (iv)
    R
  • (v)
    W
Question 26
26.
Which of the following symbols represent the set of Rational numbers ?
  • (i)
    Q
  • (ii)
    Q'
  • (iii)
    W
  • (iv)
    Z
  • (v)
    N
Question 27
27.
Which of the following symbols represent the set of Irrational numbers ?
  • (i)
    W
  • (ii)
    Q'
  • (iii)
    Q
  • (iv)
    N
  • (v)
    R
Question 28
28.
Which of the following symbols represent the set of Real numbers ?
  • (i)
    N
  • (ii)
    Q'
  • (iii)
    Q
  • (iv)
    R
  • (v)
    Z
    Assignment Key

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