EduSahara™ Assignment
Name : Rational Numbers and their Decimal Expansions
Chapter : Real Numbers
Grade : SSC Grade X
License : Non Commercial Use
Question 1
1.
    • Express
    • 3

      10
    • as a decimal correct to 1 decimal places
  • (i)
    3
  • (ii)
    0
  • (iii)
    0.1
  • (iv)
    0.4
  • (v)
    0.3
Question 2
2.
    • Express
    • 93

      100
    • as a decimal correct to 2 decimal places
  • (i)
    0.93
  • (ii)
    0.09
  • (iii)
    9.3
  • (iv)
    0.73
  • (v)
    1.03
Question 3
3.
    • Express
    • 461

      1000
    • as a decimal correct to 3 decimal places
  • (i)
    4.61
  • (ii)
    0.461
  • (iii)
    0.046
  • (iv)
    0.261
  • (v)
    0.561
Question 4
4.
    • Express
    • 7831

      10000
    • as a decimal correct to 4 decimal places
  • (i)
    0.0783
  • (ii)
    0.8831
  • (iii)
    0.5831
  • (iv)
    0.7831
  • (v)
    7.831
Question 5
5.
6.7 =
  • (i)
    67

    100
  • (ii)
    67

    10
  • (iii)
    670
  • (iv)
    67
  • (v)
    67

    1000
Question 6
6.
2.9 =
  • (i)
    29

    10
  • (ii)
    29
  • (iii)
    29

    100
  • (iv)
    290
  • (v)
    29

    1000
Question 7
7.
13.71 =
  • (i)
    1371

    100
  • (ii)
    1371
  • (iii)
    1371

    10
  • (iv)
    1371

    1000
  • (v)
    1371

    10000
Question 8
8.
7.109 =
  • (i)
    7109

    10000
  • (ii)
    7109

    100000
  • (iii)
    7109

    1000
  • (iv)
    7109

    100
  • (v)
    7109

    10
Question 9
9.
1.1 =
  • (i)
    11

    100
  • (ii)
    11

    10
  • (iii)
    110
  • (iv)
    11
  • (v)
    11

    1000
Question 10
10.
9.14 =
  • (i)
    914
  • (ii)
    457

    5
  • (iii)
    457

    500
  • (iv)
    457

    50
  • (v)
    457

    5000
Question 11
11.
3.72 =
  • (i)
    372
  • (ii)
    186

    5
  • (iii)
    93

    2500
  • (iv)
    93

    250
  • (v)
    93

    25
Question 12
12.
3.408 =
  • (i)
    426

    125
  • (ii)
    213

    625
  • (iii)
    852

    25
  • (iv)
    1704

    5
  • (v)
    213

    6250
Question 13
13.
    • Express
    • 1

      8
    • as a decimal correct to 1 decimal places
  • (i)
    0.3
  • (ii)
    0.1
  • (iii)
    -0.1
  • (iv)
    0
  • (v)
    0.2
Question 14
14.
    • Express
    • 7

      10
    • as a decimal correct to 2 decimal places
  • (i)
    0.8
  • (ii)
    0.6
  • (iii)
    0.7
  • (iv)
    0.9
  • (v)
    0.5
Question 15
15.
    • Express
    • 8

      7
    • as a decimal correct to 3 decimal places
  • (i)
    0.943
  • (ii)
    1.243
  • (iii)
    1.043
  • (iv)
    1.343
  • (v)
    1.143
Question 16
16.
    • Express
    • 1

      8
    • as a decimal correct to 4 decimal places
  • (i)
    0.125
  • (ii)
    0.225
  • (iii)
    0.025
  • (iv)
    -0.075
  • (v)
    0.325
Question 17
17.
    • Express
    • 27

      73
    • as a decimal correct to 1 decimal places
  • (i)
    0.6
  • (ii)
    0.3
  • (iii)
    0.4
  • (iv)
    0.2
  • (v)
    0.5
Question 18
18.
    • Find the period of the recurring decimal
    • 28.
      5
  • (i)
    0
  • (ii)
    5
  • (iii)
    2
  • (iv)
    1
  • (v)
    50
Question 19
19.
    • Find the period of the recurring decimal
    • 1.88888888888888...
  • (i)
    80
  • (ii)
    8
  • (iii)
    1
  • (iv)
    2
  • (v)
    0
Question 20
20.
    • Find the periodicity of the recurring decimal
    • 21.
      7
  • (i)
    -1
  • (ii)
    1
  • (iii)
    7
  • (iv)
    2
  • (v)
    0
Question 21
21.
    • Find the periodicity of the recurring decimal
    • 17.09523809523809...
  • (i)
    95238
  • (ii)
    6
  • (iii)
    4
  • (iv)
    5
  • (v)
    7
Question 22
22.
    • The recurring part of the decimal
    • 10.
      8
    • is
  • (i)
    88
  • (ii)
    10.8
  • (iii)
    8
  • (iv)
    881
  • (v)
    888
Question 23
23.
    • The recurring part of the decimal
    • 1.38888888888888...
    • is
  • (i)
    881
  • (ii)
    8
  • (iii)
    88
  • (iv)
    1.38
  • (v)
    838
Question 24
24.
    • Convert the non-terminating recurring decimal
    • 24.6
      1
    • to rational number
  • (i)
    49

    2
  • (ii)
    443

    20
  • (iii)
    443

    18
  • (iv)
    445

    18
  • (v)
    443

    16
Question 25
25.
    • Convert the non-terminating recurring decimal
    • 17.88888888888888...
    • to rational number
  • (i)
    23
  • (ii)
    163

    9
  • (iii)
    161

    11
  • (iv)
    161

    9
  • (v)
    53

    3
Question 26
26.
    • Convert the fraction
    • 275

      9
    • to non-terminating recurring decimal
  • (i)
    0.30
    5
  • (ii)
    3.0
    5
  • (iii)
    3055.
    5
  • (iv)
    305.
    5
  • (v)
    30.
    5
Question 27
27.
    • Convert the fraction
    • 226

      9
    • to non-terminating recurring decimal
  • (i)
    0.25
    1
  • (ii)
    2.5
    1
  • (iii)
    251.
    1
  • (iv)
    2511.
    1
  • (v)
    25.
    1
Question 28
28.
Which of the following fractions converts to a non-terminating recurring decimal?
  • (i)
    289

    4
  • (ii)
    3600

    125
  • (iii)
    2280

    32
  • (iv)
    285

    2
  • (v)
    92

    9
Question 29
29.
Which of the following fractions converts to a terminating decimal?
  • (i)
    217

    18
  • (ii)
    217

    99
  • (iii)
    217

    270
  • (iv)
    3060

    16
  • (v)
    125

    9
Question 30
30.
    • Which of the following is an irrational number?
  • (i)
    3


    33
  • (ii)
    2

    3
  • (iii)
    3.5926
  • (iv)
    7
  • (v)
    5
Question 31
31.
    • Which of the following is a rational number?
  • (i)
    6

    8
  • (ii)
    3


    47
  • (iii)
    3


    37
  • (iv)



    30
  • (v)



    50
Question 32
32.
Which of the following is a decimal fraction?
  • (i)
    3

    5
  • (ii)
    16

    7
  • (iii)
    7
    3

    4
  • (iv)
    6

    10
Question 33
33.
Which of the following is a decimal fraction?
  • (i)
    17

    12
  • (ii)
    17
    1

    7
  • (iii)
    3
    3

    8
  • (iv)
    1

    9
  • (v)
    3

    100
Question 34
34.
Which of the following is a decimal fraction?
  • (i)
    8

    1000
  • (ii)
    2

    7
  • (iii)
    6
    2

    19
  • (iv)
    18
    2

    17
  • (v)
    11

    5
Question 35
35.
Which of the following is a decimal fraction?
  • (i)
    8

    10000
  • (ii)
    5
    2

    5
  • (iii)
    3

    7
  • (iv)
    19

    4
  • (v)
    7
    4

    11
    Assignment Key

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