EduSahara™ Assignment
Name : Rational Numbers and their Decimal Expansions
Chapter : Real Numbers
Grade : SSC Grade IX
License : Non Commercial Use
Question
1
1.
Express
1
4
as a decimal correct to 2 decimal places
(i)
2.5
(ii)
0.03
(iii)
0.25
(iv)
0.05
(v)
0.35
Question
2
2.
Express
13
19
as a decimal correct to 2 decimal places
(i)
0.68
(ii)
0.78
(iii)
0.48
(iv)
6.84
(v)
0.07
Question
3
3.
Express
11
6
as a decimal correct to 2 decimal places
(i)
1.63
(ii)
1.93
(iii)
18.33
(iv)
1.83
(v)
0.18
Question
4
4.
Express
1
49
as a decimal correct to 2 decimal places
(i)
0.02
(ii)
0.12
(iii)
0.2
(iv)
-0.18
(v)
0
Question
5
5.
Express
1
10
as a decimal correct to 1 decimal places
(i)
0.2
(ii)
1
(iii)
0
(iv)
-0.1
(v)
0.1
Question
6
6.
Express
13
100
as a decimal correct to 2 decimal places
(i)
-0.07
(ii)
0.23
(iii)
0.13
(iv)
1.3
(v)
0.01
Question
7
7.
Express
813
1000
as a decimal correct to 3 decimal places
(i)
0.913
(ii)
8.13
(iii)
0.813
(iv)
0.081
(v)
0.613
Question
8
8.
Express
9213
10000
as a decimal correct to 4 decimal places
(i)
1.0213
(ii)
0.9213
(iii)
0.0921
(iv)
0.7213
(v)
9.213
Question
9
9.
7.6 =
(i)
760
(ii)
76
(iii)
19
25
(iv)
19
250
(v)
38
5
Question
10
10.
4.6 =
(i)
23
500
(ii)
23
5
(iii)
23
50
(iv)
46
(v)
460
Question
11
11.
2.92 =
(i)
73
250
(ii)
292
(iii)
146
5
(iv)
73
2500
(v)
73
25
Question
12
12.
2.451 =
(i)
2451
10
(ii)
2451
10000
(iii)
2451
1000
(iv)
2451
100000
(v)
2451
100
Question
13
13.
8.2 =
(i)
82
(ii)
41
500
(iii)
41
5
(iv)
820
(v)
41
50
Question
14
14.
3.11 =
(i)
311
10000
(ii)
311
1000
(iii)
311
(iv)
311
100
(v)
311
10
Question
15
15.
3.69 =
(i)
369
10000
(ii)
369
10
(iii)
369
(iv)
369
1000
(v)
369
100
Question
16
16.
1.453 =
(i)
1453
100000
(ii)
1453
10000
(iii)
1453
100
(iv)
1453
1000
(v)
1453
10
Question
17
17.
Express
7
8
as a decimal correct to 1 decimal places
(i)
0.7
(ii)
0.9
(iii)
1
(iv)
1.1
(v)
0.8
Question
18
18.
Express
1
7
as a decimal correct to 2 decimal places
(i)
0.04
(ii)
0.14
(iii)
-0.06
(iv)
0.34
(v)
0.24
Question
19
19.
Express
4
9
as a decimal correct to 3 decimal places
(i)
0.244
(ii)
0.344
(iii)
0.444
(iv)
0.544
(v)
0.644
Question
20
20.
Express
7
3
as a decimal correct to 4 decimal places
(i)
2.3333
(ii)
2.1333
(iii)
2.4333
(iv)
2.5333
(v)
2.2333
Question
21
21.
Express
24
61
as a decimal correct to 1 decimal places
(i)
0.6
(ii)
0.5
(iii)
0.4
(iv)
0.3
(v)
0.2
Question
22
22.
Express
98
81
as a decimal correct to 2 decimal places
(i)
1.21
(ii)
1.31
(iii)
1.41
(iv)
1.01
(v)
1.11
Question
23
23.
Express
14
17
as a decimal correct to 3 decimal places
(i)
0.624
(ii)
0.824
(iii)
0.724
(iv)
1.024
(v)
0.924
Question
24
24.
Express
97
52
as a decimal correct to 4 decimal places
(i)
1.6654
(ii)
1.7654
(iii)
1.8654
(iv)
1.9654
(v)
2.0654
Question
25
25.
Express
196
811
as a decimal correct to 3 decimal places
(i)
0.442
(ii)
0.042
(iii)
0.242
(iv)
0.342
(v)
0.142
Question
26
26.
Express
8234
3641
as a decimal correct to 4 decimal places
(i)
2.4615
(ii)
2.2615
(iii)
2.1615
(iv)
2.0615
(v)
2.3615
Question
27
27.
Find the period of the recurring decimal
11.9
4
(i)
40
(ii)
0
(iii)
2
(iv)
1
(v)
4
Question
28
28.
Find the period of the recurring decimal
11.55555555555555...
(i)
2
(ii)
1
(iii)
5
(iv)
0
(v)
50
Question
29
29.
Find the periodicity of the recurring decimal
26.
761904
(i)
6
(ii)
7
(iii)
4
(iv)
761904
(v)
5
Question
30
30.
Find the periodicity of the recurring decimal
11.47619047619047...
(i)
7
(ii)
476190
(iii)
6
(iv)
5
(v)
4
Question
31
31.
The recurring part of the decimal
11.
2
is
(i)
22
(ii)
11.2
(iii)
2
(iv)
221
(v)
222
Question
32
32.
The recurring part of the decimal
6.37037037037037...
is
(i)
370
(ii)
37036
(iii)
6.370
(iv)
370370
(v)
3703370
Question
33
33.
Convert the non-terminating recurring decimal
25.
259
to rational number
(i)
680
27
(ii)
682
29
(iii)
682
27
(iv)
682
25
(v)
76
3
Question
34
34.
Convert the non-terminating recurring decimal
1.38888888888888...
to rational number
(i)
5
4
(ii)
25
18
(iii)
3
2
(iv)
23
18
(v)
25
16
Question
35
35.
Convert the fraction
1
3
to non-terminating recurring decimal
(i)
0.
0
(ii)
33.
3
(iii)
3.
3
(iv)
0.0
3
(v)
0.
3
Question
36
36.
Convert the fraction
679
27
to non-terminating recurring decimal
(i)
2.5
148
(ii)
0.25
148
(iii)
2514.
814
(iv)
25.
148
(v)
251.
481
Question
37
37.
Which of the following fractions converts to a non-terminating recurring decimal?
(i)
1521
20
(ii)
1
3
(iii)
4864
64
(iv)
3042
80
(v)
1561
40
Question
38
38.
Which of the following fractions converts to a terminating decimal?
(i)
251
18
(ii)
118
9
(iii)
4800
160
(iv)
251
252
(v)
251
180
Assignment Key
1) (iii)
2) (i)
3) (iv)
4) (i)
5) (v)
6) (iii)
7) (iii)
8) (ii)
9) (v)
10) (ii)
11) (v)
12) (iii)
13) (iii)
14) (iv)
15) (v)
16) (iv)
17) (ii)
18) (ii)
19) (iii)
20) (i)
21) (iii)
22) (i)
23) (ii)
24) (iii)
25) (iii)
26) (ii)
27) (v)
28) (iii)
29) (i)
30) (iii)
31) (iii)
32) (i)
33) (iii)
34) (ii)
35) (v)
36) (iv)
37) (ii)
38) (iii)