EduSahara™ Assignment
Name : Rational Numbers and their Decimal Expansions
Chapter : Real Numbers
Grade : SSC Grade IX
License : Non Commercial Use
Question 1
1.
    • Express
    • 7

      2
    • as a decimal correct to 2 decimal places
  • (i)
    0.35
  • (ii)
    3.5
  • (iii)
    3.6
  • (iv)
    3.3
  • (v)
    35
Question 2
2.
    • Express
    • 17

      15
    • as a decimal correct to 2 decimal places
  • (i)
    1.13
  • (ii)
    11.33
  • (iii)
    0.11
  • (iv)
    1.23
  • (v)
    0.93
Question 3
3.
    • Express
    • 45

      43
    • as a decimal correct to 2 decimal places
  • (i)
    10.47
  • (ii)
    0.85
  • (iii)
    0.1
  • (iv)
    1.05
  • (v)
    1.15
Question 4
4.
    • Express
    • 29

      17
    • as a decimal correct to 2 decimal places
  • (i)
    0.17
  • (ii)
    17.06
  • (iii)
    1.51
  • (iv)
    1.71
  • (v)
    1.81
Question 5
5.
    • Express
    • 7

      10
    • as a decimal correct to 1 decimal places
  • (i)
    0.1
  • (ii)
    0.7
  • (iii)
    0.5
  • (iv)
    7
  • (v)
    0.8
Question 6
6.
    • Express
    • 67

      100
    • as a decimal correct to 2 decimal places
  • (i)
    6.7
  • (ii)
    0.67
  • (iii)
    0.07
  • (iv)
    0.47
  • (v)
    0.77
Question 7
7.
    • Express
    • 327

      1000
    • as a decimal correct to 3 decimal places
  • (i)
    0.033
  • (ii)
    0.127
  • (iii)
    0.327
  • (iv)
    0.427
  • (v)
    3.27
Question 8
8.
    • Express
    • 9389

      10000
    • as a decimal correct to 4 decimal places
  • (i)
    0.0939
  • (ii)
    0.9389
  • (iii)
    1.0389
  • (iv)
    9.389
  • (v)
    0.7389
Question 9
9.
10.7 =
  • (i)
    107

    100
  • (ii)
    107
  • (iii)
    107

    1000
  • (iv)
    107

    10
  • (v)
    1070
Question 10
10.
4.0 =
  • (i)
    2

    5
  • (ii)
    40
  • (iii)
    400
  • (iv)
    4

    1
  • (v)
    1

    25
Question 11
11.
9.59 =
  • (i)
    959

    100
  • (ii)
    959

    10
  • (iii)
    959

    10000
  • (iv)
    959

    1000
  • (v)
    959
Question 12
12.
2.405 =
  • (i)
    481

    2000
  • (ii)
    481

    2
  • (iii)
    481

    200
  • (iv)
    481

    20
  • (v)
    481

    20000
Question 13
13.
2.8 =
  • (i)
    28
  • (ii)
    280
  • (iii)
    7

    25
  • (iv)
    14

    5
  • (v)
    7

    250
Question 14
14.
4.11 =
  • (i)
    411

    1000
  • (ii)
    411

    10000
  • (iii)
    411

    100
  • (iv)
    411

    10
  • (v)
    411
Question 15
15.
14.63 =
  • (i)
    1463
  • (ii)
    1463

    100
  • (iii)
    1463

    10000
  • (iv)
    1463

    1000
  • (v)
    1463

    10
Question 16
16.
9.979 =
  • (i)
    9979

    100
  • (ii)
    9979

    10000
  • (iii)
    9979

    10
  • (iv)
    9979

    1000
  • (v)
    9979

    100000
Question 17
17.
    • Express
    • 2

      7
    • as a decimal correct to 1 decimal places
  • (i)
    0.2
  • (ii)
    0.1
  • (iii)
    0.3
  • (iv)
    0.4
  • (v)
    0.5
Question 18
18.
    • Express
    • 1

      2
    • as a decimal correct to 2 decimal places
  • (i)
    0.4
  • (ii)
    0.7
  • (iii)
    0.6
  • (iv)
    0.3
  • (v)
    0.5
Question 19
19.
    • Express
    • 1

      8
    • as a decimal correct to 3 decimal places
  • (i)
    0.125
  • (ii)
    0.225
  • (iii)
    0.025
  • (iv)
    0.325
  • (v)
    -0.075
Question 20
20.
    • Express
    • 10

      9
    • as a decimal correct to 4 decimal places
  • (i)
    1.1111
  • (ii)
    1.2111
  • (iii)
    0.9111
  • (iv)
    1.0111
  • (v)
    1.3111
Question 21
21.
    • Express
    • 37

      64
    • as a decimal correct to 1 decimal places
  • (i)
    0.7
  • (ii)
    0.8
  • (iii)
    0.5
  • (iv)
    0.4
  • (v)
    0.6
Question 22
22.
    • Express
    • 79

      100
    • as a decimal correct to 2 decimal places
  • (i)
    0.89
  • (ii)
    0.59
  • (iii)
    0.79
  • (iv)
    0.99
  • (v)
    0.69
Question 23
23.
    • Express
    • 29

      78
    • as a decimal correct to 3 decimal places
  • (i)
    0.172
  • (ii)
    0.472
  • (iii)
    0.272
  • (iv)
    0.572
  • (v)
    0.372
Question 24
24.
    • Express
    • 19

      44
    • as a decimal correct to 4 decimal places
  • (i)
    0.2318
  • (ii)
    0.4318
  • (iii)
    0.6318
  • (iv)
    0.3318
  • (v)
    0.5318
Question 25
25.
    • Express
    • 458

      241
    • as a decimal correct to 3 decimal places
  • (i)
    2.1
  • (ii)
    1.9
  • (iii)
    2
  • (iv)
    1.7
  • (v)
    1.8
Question 26
26.
    • Express
    • 3182

      8447
    • as a decimal correct to 4 decimal places
  • (i)
    0.2767
  • (ii)
    0.4767
  • (iii)
    0.1767
  • (iv)
    0.5767
  • (v)
    0.3767
Question 27
27.
    • Find the period of the recurring decimal
    • 9.3
      8
  • (i)
    2
  • (ii)
    0
  • (iii)
    80
  • (iv)
    8
  • (v)
    1
Question 28
28.
    • Find the period of the recurring decimal
    • 10.04761904761904...
  • (i)
    4761
  • (ii)
    7
  • (iii)
    6
  • (iv)
    047619
  • (v)
    476190
Question 29
29.
    • Find the periodicity of the recurring decimal
    • 7.9
      4
  • (i)
    -1
  • (ii)
    4
  • (iii)
    1
  • (iv)
    0
  • (v)
    2
Question 30
30.
    • Find the periodicity of the recurring decimal
    • 1.05555555555555...
  • (i)
    1
  • (ii)
    2
  • (iii)
    0
  • (iv)
    -1
  • (v)
    5
Question 31
31.
    • The recurring part of the decimal
    • 4.
      8
    • is
  • (i)
    4.8
  • (ii)
    8
  • (iii)
    88
  • (iv)
    888
  • (v)
    884
Question 32
32.
    • The recurring part of the decimal
    • 30.81481481481481...
    • is
  • (i)
    814814
  • (ii)
    30.814
  • (iii)
    8148814
  • (iv)
    81483
  • (v)
    814
Question 33
33.
    • Convert the non-terminating recurring decimal
    • 9.
      2
    • to rational number
  • (i)
    9
  • (ii)
    83

    7
  • (iii)
    85

    9
  • (iv)
    83

    9
  • (v)
    83

    11
Question 34
34.
    • Convert the non-terminating recurring decimal
    • 3.90476190476190...
    • to rational number
  • (i)
    80

    21
  • (ii)
    82

    23
  • (iii)
    82

    21
  • (iv)
    82

    19
  • (v)
    4
Question 35
35.
    • Convert the fraction
    • 206

      9
    • to non-terminating recurring decimal
  • (i)
    0.
    2
  • (ii)
    2288.
    8
  • (iii)
    228.
    8
  • (iv)
    22.
    8
  • (v)
    2.2
    8
Question 36
36.
    • Convert the fraction
    • 97

      9
    • to non-terminating recurring decimal
  • (i)
    1077.
    7
  • (ii)
    107.
    7
  • (iii)
    10.
    7
  • (iv)
    1.0
    7
  • (v)
    0.10
    7
Question 37
37.
Which of the following fractions converts to a non-terminating recurring decimal?
  • (i)
    2926

    320
  • (ii)
    1623

    160
  • (iii)
    1716

    32
  • (iv)
    311

    18
  • (v)
    1463

    80
Question 38
38.
Which of the following fractions converts to a terminating decimal?
  • (i)
    145

    9
  • (ii)
    1

    15
  • (iii)
    1

    3
  • (iv)
    1

    42
  • (v)
    2184

    50
    Assignment Key

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