EduSahara™ Assignment
Name : Rational Numbers and their Decimal Representation
Chapter : Rational Numbers
Grade : SSC Grade VIII
License : Non Commercial Use
Question
1
1.
Express
10
3
as a decimal correct to 1 decimal places
(i)
3.2
(ii)
3.5
(iii)
3.4
(iv)
3.1
(v)
3.3
Question
2
2.
Express
7
2
as a decimal correct to 2 decimal places
(i)
3.3
(ii)
3.5
(iii)
3.7
(iv)
3.6
(v)
3.4
Question
3
3.
Express
9
5
as a decimal correct to 3 decimal places
(i)
1.9
(ii)
2
(iii)
1.6
(iv)
1.8
(v)
1.7
Question
4
4.
Express
93
71
as a decimal correct to 1 decimal places
(i)
1.5
(ii)
1.4
(iii)
1.1
(iv)
1.3
(v)
1.2
Question
5
5.
Express
565
768
as a decimal correct to 3 decimal places
(i)
0.836
(ii)
0.636
(iii)
0.736
(iv)
0.536
(v)
0.936
Question
6
6.
Express
4329
6848
as a decimal correct to 4 decimal places
(i)
0.5322
(ii)
0.7322
(iii)
0.6322
(iv)
0.8322
(v)
0.4322
Question
7
7.
Find the period of the recurring decimal
12.
962
(i)
962
(ii)
96
(iii)
9620
(iv)
3
(v)
4
Question
8
8.
Find the period of the recurring decimal
30.88888888888888...
(i)
1
(ii)
0
(iii)
2
(iv)
8
(v)
80
Question
9
9.
Find the periodicity of the recurring decimal
13.
7
(i)
0
(ii)
-1
(iii)
7
(iv)
1
(v)
2
Question
10
10.
Find the periodicity of the recurring decimal
14.92592592592592...
(i)
925
(ii)
3
(iii)
4
(iv)
2
(v)
1
Question
11
11.
The recurring part of the decimal
3.
1
is
(i)
111
(ii)
3.1
(iii)
11
(iv)
1
(v)
113
Question
12
12.
The recurring part of the decimal
12.19047619047618...
is
(i)
1904761190476
(ii)
19047611
(iii)
190476190476
(iv)
190476
(v)
12.190476
Question
13
13.
Convert the non-terminating recurring decimal
24.
2
to rational number
(i)
220
9
(ii)
24
(iii)
218
9
(iv)
218
11
(v)
218
7
Question
14
14.
Convert the non-terminating recurring decimal
19.11111111111111...
to rational number
(i)
170
9
(ii)
172
7
(iii)
58
3
(iv)
172
11
(v)
172
9
Question
15
15.
Convert the fraction
269
21
to non-terminating recurring decimal
(i)
1280.
952380
(ii)
128.
095238
(iii)
12.
809523
(iv)
0.12
809523
(v)
1.2
809523
Question
16
16.
Convert the fraction
422
27
to non-terminating recurring decimal
(i)
1.5
629
(ii)
156.
296
(iii)
1562.
962
(iv)
15.
629
(v)
0.15
629
Question
17
17.
Which of the following fractions converts to a non-terminating recurring decimal?
(i)
118
9
(ii)
181
16
(iii)
3230
320
(iv)
1320
128
(v)
165
8
Question
18
18.
Which of the following fractions converts to a terminating decimal?
(i)
188
9
(ii)
2
39
(iii)
1
3
(iv)
1848
64
(v)
1
51
Question
19
19.
Which of the following is an irrational number?
(i)
√
38
(ii)
9
(iii)
3
21
(iv)
2.9048
(v)
1
Question
20
20.
Which of the following is a rational number?
(i)
5
6
(ii)
√
42
(iii)
√
91
(iv)
√
32
(v)
3
√
92
Question
21
21.
Express
9
8
as a decimal correct to 2 decimal places
(i)
1.12
(ii)
0.11
(iii)
11.25
(iv)
0.93
(v)
1.23
Question
22
22.
Express
19
11
as a decimal correct to 2 decimal places
(i)
1.83
(ii)
0.17
(iii)
17.27
(iv)
1.73
(v)
1.53
Question
23
23.
Express
19
37
as a decimal correct to 2 decimal places
(i)
0.61
(ii)
0.05
(iii)
0.51
(iv)
0.31
(v)
5.14
Question
24
24.
Express
50
49
as a decimal correct to 2 decimal places
(i)
0.82
(ii)
10.2
(iii)
1.02
(iv)
1.12
(v)
0.1
Question
25
25.
Express
7
10
as a decimal correct to 1 decimal places
(i)
0.8
(ii)
7
(iii)
0.7
(iv)
0.5
(v)
0.1
Question
26
26.
Express
31
100
as a decimal correct to 2 decimal places
(i)
0.41
(ii)
0.31
(iii)
3.1
(iv)
0.11
(v)
0.03
Question
27
27.
Express
489
1000
as a decimal correct to 3 decimal places
(i)
0.289
(ii)
0.589
(iii)
4.89
(iv)
0.489
(v)
0.049
Question
28
28.
Express
1439
10000
as a decimal correct to 4 decimal places
(i)
0.1439
(ii)
0.2439
(iii)
1.439
(iv)
-0.0561
(v)
0.0144
Question
29
29.
10.6 =
(i)
106
(ii)
53
500
(iii)
1060
(iv)
53
50
(v)
53
5
Question
30
30.
10.7 =
(i)
107
10
(ii)
107
1000
(iii)
107
(iv)
107
100
(v)
1070
Question
31
31.
1.76 =
(i)
11
625
(ii)
176
(iii)
22
125
(iv)
88
5
(v)
44
25
Question
32
32.
6.394 =
(i)
3197
50
(ii)
3197
50000
(iii)
3197
5000
(iv)
3197
500
(v)
3197
5
Question
33
33.
9.4 =
(i)
47
5
(ii)
940
(iii)
47
500
(iv)
47
50
(v)
94
Question
34
34.
9.10 =
(i)
91
10
(ii)
91
(iii)
91
1000
(iv)
910
(v)
91
100
Question
35
35.
3.82 =
(i)
191
500
(ii)
382
(iii)
191
50
(iv)
191
5000
(v)
191
5
Question
36
36.
4.733 =
(i)
4733
100
(ii)
4733
10000
(iii)
4733
1000
(iv)
4733
10
(v)
4733
100000
Question
37
37.
Express
7
5
as a decimal correct to 4 decimal places
(i)
1.3
(ii)
1.2
(iii)
1.5
(iv)
1.6
(v)
1.4
Question
38
38.
Express
90
11
as a decimal correct to 2 decimal places
(i)
7.98
(ii)
8.08
(iii)
8.18
(iv)
8.38
(v)
8.28
Question
39
39.
Express
10
53
as a decimal correct to 3 decimal places
(i)
0.189
(ii)
0.389
(iii)
0.289
(iv)
0.089
(v)
-0.011
Question
40
40.
Express
92
99
as a decimal correct to 4 decimal places
(i)
1.1293
(ii)
0.9293
(iii)
1.0293
(iv)
0.8293
(v)
0.7293
Assignment Key
1) (v)
2) (ii)
3) (iv)
4) (iv)
5) (iii)
6) (iii)
7) (i)
8) (iv)
9) (iv)
10) (ii)
11) (iv)
12) (iv)
13) (iii)
14) (v)
15) (iii)
16) (iv)
17) (i)
18) (iv)
19) (i)
20) (i)
21) (i)
22) (iv)
23) (iii)
24) (iii)
25) (iii)
26) (ii)
27) (iv)
28) (i)
29) (v)
30) (i)
31) (v)
32) (iv)
33) (i)
34) (i)
35) (iii)
36) (iii)
37) (v)
38) (iii)
39) (i)
40) (ii)