EduSahara™ Assignment
Name : Rational Numbers and their Decimal Expansions
Chapter : Real Numbers
Grade : SSC Grade IX
License : Non Commercial Use
Question 1
1.
    • Express
    • 5

      2
    • as a decimal correct to 2 decimal places
  • (i)
    2.5
  • (ii)
    0.25
  • (iii)
    2.6
  • (iv)
    2.3
  • (v)
    25
Question 2
2.
    • Express
    • 2

      7
    • as a decimal correct to 2 decimal places
  • (i)
    2.86
  • (ii)
    0.09
  • (iii)
    0.39
  • (iv)
    0.03
  • (v)
    0.29
Question 3
3.
    • Express
    • 49

      43
    • as a decimal correct to 2 decimal places
  • (i)
    11.4
  • (ii)
    1.14
  • (iii)
    1.24
  • (iv)
    0.11
  • (v)
    0.94
Question 4
4.
    • Express
    • 53

      38
    • as a decimal correct to 2 decimal places
  • (i)
    0.14
  • (ii)
    1.19
  • (iii)
    13.95
  • (iv)
    1.39
  • (v)
    1.49
Question 5
5.
    • Express
    • 7

      10
    • as a decimal correct to 1 decimal places
  • (i)
    0.1
  • (ii)
    0.7
  • (iii)
    7
  • (iv)
    0.8
  • (v)
    0.5
Question 6
6.
    • Express
    • 81

      100
    • as a decimal correct to 2 decimal places
  • (i)
    0.91
  • (ii)
    0.61
  • (iii)
    8.1
  • (iv)
    0.81
  • (v)
    0.08
Question 7
7.
    • Express
    • 111

      1000
    • as a decimal correct to 3 decimal places
  • (i)
    1.11
  • (ii)
    0.011
  • (iii)
    0.211
  • (iv)
    0.111
  • (v)
    -0.089
Question 8
8.
    • Express
    • 6151

      10000
    • as a decimal correct to 4 decimal places
  • (i)
    0.6151
  • (ii)
    0.0615
  • (iii)
    6.151
  • (iv)
    0.7151
  • (v)
    0.4151
Question 9
9.
7.5 =
  • (i)
    750
  • (ii)
    3

    40
  • (iii)
    75
  • (iv)
    3

    4
  • (v)
    15

    2
Question 10
10.
2.7 =
  • (i)
    27
  • (ii)
    27

    10
  • (iii)
    27

    100
  • (iv)
    27

    1000
  • (v)
    270
Question 11
11.
16.44 =
  • (i)
    411

    25
  • (ii)
    822

    5
  • (iii)
    1644
  • (iv)
    411

    250
  • (v)
    411

    2500
Question 12
12.
1.892 =
  • (i)
    473

    250
  • (ii)
    473

    25000
  • (iii)
    473

    25
  • (iv)
    946

    5
  • (v)
    473

    2500
Question 13
13.
9.7 =
  • (i)
    97
  • (ii)
    97

    1000
  • (iii)
    97

    10
  • (iv)
    97

    100
  • (v)
    970
Question 14
14.
1.12 =
  • (i)
    112
  • (ii)
    56

    5
  • (iii)
    7

    625
  • (iv)
    14

    125
  • (v)
    28

    25
Question 15
15.
4.29 =
  • (i)
    429

    10
  • (ii)
    429

    100
  • (iii)
    429

    1000
  • (iv)
    429

    10000
  • (v)
    429
Question 16
16.
9.252 =
  • (i)
    4626

    5
  • (ii)
    2313

    25
  • (iii)
    2313

    250
  • (iv)
    2313

    25000
  • (v)
    2313

    2500
Question 17
17.
    • Express
    • 7

      8
    • as a decimal correct to 1 decimal places
  • (i)
    1
  • (ii)
    0.7
  • (iii)
    0.9
  • (iv)
    0.8
  • (v)
    1.1
Question 18
18.
    • Express
    • 1

      5
    • as a decimal correct to 2 decimal places
  • (i)
    0.4
  • (ii)
    0.2
  • (iii)
    0
  • (iv)
    0.3
  • (v)
    0.1
Question 19
19.
    • Express
    • 3

      8
    • as a decimal correct to 3 decimal places
  • (i)
    0.575
  • (ii)
    0.175
  • (iii)
    0.475
  • (iv)
    0.375
  • (v)
    0.275
Question 20
20.
    • Express
    • 8

      9
    • as a decimal correct to 4 decimal places
  • (i)
    1.0889
  • (ii)
    0.6889
  • (iii)
    0.7889
  • (iv)
    0.8889
  • (v)
    0.9889
Question 21
21.
    • Express
    • 17

      65
    • as a decimal correct to 1 decimal places
  • (i)
    0.4
  • (ii)
    0.5
  • (iii)
    0.3
  • (iv)
    0.2
  • (v)
    0.1
Question 22
22.
    • Express
    • 47

      72
    • as a decimal correct to 2 decimal places
  • (i)
    0.65
  • (ii)
    0.75
  • (iii)
    0.85
  • (iv)
    0.55
  • (v)
    0.45
Question 23
23.
    • Express
    • 69

      43
    • as a decimal correct to 3 decimal places
  • (i)
    1.605
  • (ii)
    1.805
  • (iii)
    1.705
  • (iv)
    1.405
  • (v)
    1.505
Question 24
24.
    • Express
    • 52

      75
    • as a decimal correct to 4 decimal places
  • (i)
    0.4933
  • (ii)
    0.7933
  • (iii)
    0.8933
  • (iv)
    0.6933
  • (v)
    0.5933
Question 25
25.
    • Express
    • 557

      395
    • as a decimal correct to 3 decimal places
  • (i)
    1.51
  • (ii)
    1.31
  • (iii)
    1.61
  • (iv)
    1.21
  • (v)
    1.41
Question 26
26.
    • Express
    • 4985

      5814
    • as a decimal correct to 4 decimal places
  • (i)
    1.0574
  • (ii)
    0.8574
  • (iii)
    0.6574
  • (iv)
    0.7574
  • (v)
    0.9574
Question 27
27.
    • Find the period of the recurring decimal
    • 17.
      7
  • (i)
    0
  • (ii)
    7
  • (iii)
    2
  • (iv)
    70
  • (v)
    1
Question 28
28.
    • Find the period of the recurring decimal
    • 19.22222222222222...
  • (i)
    0
  • (ii)
    2
  • (iii)
    1
  • (iv)
    20
Question 29
29.
    • Find the periodicity of the recurring decimal
    • 2.3
      8
  • (i)
    8
  • (ii)
    1
  • (iii)
    0
  • (iv)
    2
  • (v)
    -1
Question 30
30.
    • Find the periodicity of the recurring decimal
    • 4.88888888888888...
  • (i)
    1
  • (ii)
    2
  • (iii)
    -1
  • (iv)
    0
  • (v)
    8
Question 31
31.
    • The recurring part of the decimal
    • 18.
      238095
    • is
  • (i)
    238095238095
  • (ii)
    238095
  • (iii)
    18.238095
  • (iv)
    2380952238095
  • (v)
    23809521
Question 32
32.
    • The recurring part of the decimal
    • 21.22222222222222...
    • is
  • (i)
    222
  • (ii)
    21.2
  • (iii)
    22
  • (iv)
    2
Question 33
33.
    • Convert the non-terminating recurring decimal
    • 17.
      1
    • to rational number
  • (i)
    14
  • (ii)
    154

    9
  • (iii)
    152

    9
  • (iv)
    22
  • (v)
    52

    3
Question 34
34.
    • Convert the non-terminating recurring decimal
    • 17.62962962962962...
    • to rational number
  • (i)
    478

    27
  • (ii)
    476

    25
  • (iii)
    158

    9
  • (iv)
    476

    29
  • (v)
    476

    27
Question 35
35.
    • Convert the fraction
    • 127

      9
    • to non-terminating recurring decimal
  • (i)
    1.4
    1
  • (ii)
    1411.
    1
  • (iii)
    0.
    1
  • (iv)
    14.
    1
  • (v)
    141.
    1
Question 36
36.
    • Convert the fraction
    • 563

      21
    • to non-terminating recurring decimal
  • (i)
    2.6
    809523
  • (ii)
    268.
    095238
  • (iii)
    2680.95238095238
    1
  • (iv)
    26.
    809523
  • (v)
    0.26
    809523
Question 37
37.
Which of the following fractions converts to a non-terminating recurring decimal?
  • (i)
    3120

    320
  • (ii)
    39

    2
  • (iii)
    3952

    80
  • (iv)
    43

    4
  • (v)
    167

    9
Question 38
38.
Which of the following fractions converts to a terminating decimal?
  • (i)
    349

    18
  • (ii)
    205

    306
  • (iii)
    205

    99
  • (iv)
    3468

    200
  • (v)
    205

    18
    Assignment Key

  •  1) (i)
  •  2) (v)
  •  3) (ii)
  •  4) (iv)
  •  5) (ii)
  •  6) (iv)
  •  7) (iv)
  •  8) (i)
  •  9) (v)
  •  10) (ii)
  •  11) (i)
  •  12) (i)
  •  13) (iii)
  •  14) (v)
  •  15) (ii)
  •  16) (iii)
  •  17) (iii)
  •  18) (ii)
  •  19) (iv)
  •  20) (iv)
  •  21) (iii)
  •  22) (i)
  •  23) (i)
  •  24) (iv)
  •  25) (v)
  •  26) (ii)
  •  27) (ii)
  •  28) (ii)
  •  29) (ii)
  •  30) (i)
  •  31) (ii)
  •  32) (iv)
  •  33) (ii)
  •  34) (v)
  •  35) (iv)
  •  36) (iv)
  •  37) (v)
  •  38) (iv)