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

      10
    • as a decimal correct to 1 decimal places
  • (i)
    0.8
  • (ii)
    0.7
  • (iii)
    0.1
  • (iv)
    0.5
  • (v)
    7
Question 2
2.
    • Express
    • 23

      100
    • as a decimal correct to 2 decimal places
  • (i)
    0.02
  • (ii)
    0.33
  • (iii)
    0.23
  • (iv)
    0.03
  • (v)
    2.3
Question 3
3.
    • Express
    • 997

      1000
    • as a decimal correct to 3 decimal places
  • (i)
    1.097
  • (ii)
    0.997
  • (iii)
    0.1
  • (iv)
    9.97
  • (v)
    0.797
Question 4
4.
    • Express
    • 8869

      10000
    • as a decimal correct to 4 decimal places
  • (i)
    0.8869
  • (ii)
    0.9869
  • (iii)
    8.869
  • (iv)
    0.0887
  • (v)
    0.6869
Question 5
5.
4.4 =
  • (i)
    11

    25
  • (ii)
    440
  • (iii)
    44
  • (iv)
    22

    5
  • (v)
    11

    250
Question 6
6.
2.7 =
  • (i)
    27

    1000
  • (ii)
    270
  • (iii)
    27

    100
  • (iv)
    27
  • (v)
    27

    10
Question 7
7.
16.64 =
  • (i)
    208

    125
  • (ii)
    832

    5
  • (iii)
    416

    25
  • (iv)
    1664
  • (v)
    104

    625
Question 8
8.
1.439 =
  • (i)
    1439

    100000
  • (ii)
    1439

    1000
  • (iii)
    1439

    10
  • (iv)
    1439

    10000
  • (v)
    1439

    100
Question 9
9.
6.1 =
  • (i)
    61

    1000
  • (ii)
    610
  • (iii)
    61

    100
  • (iv)
    61

    10
  • (v)
    61
Question 10
10.
3.11 =
  • (i)
    311

    100
  • (ii)
    311
  • (iii)
    311

    10
  • (iv)
    311

    1000
  • (v)
    311

    10000
Question 11
11.
7.89 =
  • (i)
    789
  • (ii)
    789

    100
  • (iii)
    789

    10
  • (iv)
    789

    10000
  • (v)
    789

    1000
Question 12
12.
1.495 =
  • (i)
    299

    2
  • (ii)
    299

    200
  • (iii)
    299

    20000
  • (iv)
    299

    2000
  • (v)
    299

    20
Question 13
13.
    • Express
    • 2

      3
    • as a decimal correct to 1 decimal places
  • (i)
    0.6
  • (ii)
    0.5
  • (iii)
    0.8
  • (iv)
    0.7
  • (v)
    0.9
Question 14
14.
    • Express
    • 3

      7
    • as a decimal correct to 2 decimal places
  • (i)
    0.43
  • (ii)
    0.23
  • (iii)
    0.63
  • (iv)
    0.33
  • (v)
    0.53
Question 15
15.
    • Express
    • 9

      7
    • as a decimal correct to 3 decimal places
  • (i)
    1.086
  • (ii)
    1.386
  • (iii)
    1.486
  • (iv)
    1.286
  • (v)
    1.186
Question 16
16.
    • Express
    • 4

      7
    • as a decimal correct to 4 decimal places
  • (i)
    0.4714
  • (ii)
    0.6714
  • (iii)
    0.3714
  • (iv)
    0.5714
  • (v)
    0.7714
Question 17
17.
    • Express
    • 96

      31
    • as a decimal correct to 1 decimal places
  • (i)
    3.3
  • (ii)
    3.1
  • (iii)
    3
  • (iv)
    3.2
  • (v)
    2.9
Question 18
18.
    • Find the period of the recurring decimal
    • 29.
      4
  • (i)
    1
  • (ii)
    4
  • (iii)
    40
  • (iv)
    2
  • (v)
    0
Question 19
19.
    • Find the period of the recurring decimal
    • 8.77777777777777...
  • (i)
    7
  • (ii)
    2
  • (iii)
    70
  • (iv)
    0
  • (v)
    1
Question 20
20.
    • Find the periodicity of the recurring decimal
    • 7.
      1
  • (i)
    0
  • (ii)
    2
  • (iii)
    -1
  • (iv)
    1
Question 21
21.
    • Find the periodicity of the recurring decimal
    • 11.48148148148148...
  • (i)
    2
  • (ii)
    481
  • (iii)
    3
  • (iv)
    1
  • (v)
    4
Question 22
22.
    • The recurring part of the decimal
    • 12.
      740
    • is
  • (i)
    7407740
  • (ii)
    74071
  • (iii)
    740740
  • (iv)
    12.740
  • (v)
    740
Question 23
23.
    • The recurring part of the decimal
    • 8.22222222222222...
    • is
  • (i)
    22
  • (ii)
    2
  • (iii)
    228
  • (iv)
    222
  • (v)
    8.2
Question 24
24.
    • Convert the non-terminating recurring decimal
    • 1.
      2
    • to rational number
  • (i)
    11

    7
  • (ii)
    1
  • (iii)
    13

    9
  • (iv)
    11

    9
Question 25
25.
    • Convert the non-terminating recurring decimal
    • 14.55555555555555...
    • to rational number
  • (i)
    43

    3
  • (ii)
    131

    9
  • (iii)
    131

    11
  • (iv)
    133

    9
  • (v)
    131

    7
Question 26
26.
    • Convert the fraction
    • 1

      3
    • to non-terminating recurring decimal
  • (i)
    0.
    3
  • (ii)
    33.
    3
  • (iii)
    0.0
    3
  • (iv)
    0.
    0
  • (v)
    3.
    3
Question 27
27.
    • Convert the fraction
    • 14

      9
    • to non-terminating recurring decimal
  • (i)
    0.1
    5
  • (ii)
    0.01
    5
  • (iii)
    155.
    5
  • (iv)
    1.
    5
  • (v)
    15.
    5
Question 28
28.
Which of the following fractions converts to a non-terminating recurring decimal?
  • (i)
    135

    2
  • (ii)
    253

    18
  • (iii)
    139

    4
  • (iv)
    2700

    80
  • (v)
    4320

    128
Question 29
29.
Which of the following fractions converts to a terminating decimal?
  • (i)
    265

    18
  • (ii)
    1

    3
  • (iii)
    1

    45
  • (iv)
    1

    21
  • (v)
    3528

    80
Question 30
30.
    • Which of the following is an irrational number?
  • (i)
    10

    12
  • (ii)
    23
  • (iii)
    7
  • (iv)
    27.1481
  • (v)
    3
    √


    36
Question 31
31.
    • Which of the following is a rational number?
  • (i)
    3
    √


    47
  • (ii)
    6

    7
  • (iii)

    √


    76
  • (iv)
    3
    √


    23
  • (v)
    3
    √


    53
Question 32
32.
Which of the following is a decimal fraction?
  • (i)
    2

    10
  • (ii)
    16
    4

    5
  • (iii)
    13
    10

    17
  • (iv)
    17

    7
  • (v)
    2

    6
Question 33
33.
Which of the following is a decimal fraction?
  • (i)
    4

    18
  • (ii)
    5

    100
  • (iii)
    12
    7

    8
  • (iv)
    17

    6
  • (v)
    10
    9

    11
Question 34
34.
Which of the following is a decimal fraction?
  • (i)
    9
    1

    2
  • (ii)
    3

    4
  • (iii)
    20
    4

    17
  • (iv)
    16

    5
  • (v)
    3

    1000
Question 35
35.
Which of the following is a decimal fraction?
  • (i)
    8

    10000
  • (ii)
    17
    3

    13
  • (iii)
    1

    2
  • (iv)
    7

    5
  • (v)
    17
    10

    11
    Assignment Key

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