EduSahara™ Assignment
Name : Rational Numbers and their Decimal Expansions
Chapter : Real Numbers
Grade : CBSE Grade X
License : Non Commercial Use
Question
1
1.
The recurring part of the decimal
11.
5
is
(i)
555
(ii)
55
(iii)
5
(iv)
11.5
(v)
551
Question
2
2.
The recurring part of the decimal
7.11111111111111...
is
(i)
11
(ii)
117
(iii)
7.1
(iv)
1
(v)
111
Question
3
3.
Convert the non-terminating recurring decimal
10.
740
to rational number
(i)
290
27
(ii)
10
(iii)
292
27
(iv)
32
3
(v)
58
5
Question
4
4.
Convert the non-terminating recurring decimal
15.22222222222222...
to rational number
(i)
139
9
(ii)
137
11
(iii)
15
(iv)
137
7
(v)
137
9
Question
5
5.
Convert the fraction
256
9
to non-terminating recurring decimal
(i)
2.8
4
(ii)
2844.
4
(iii)
284.
4
(iv)
0.28
4
(v)
28.
4
Question
6
6.
Convert the fraction
430
27
to non-terminating recurring decimal
(i)
15.
925
(ii)
1.
592
(iii)
1592.
592
(iv)
0.1
592
(v)
159.
259
Question
7
7.
Which of the following fractions converts to a non-terminating recurring decimal?
(i)
3315
100
(ii)
251
18
(iii)
701
1
(iv)
1400
1
(v)
5600
8
Question
8
8.
Which of the following fractions converts to a terminating decimal?
(i)
251
18
(ii)
4560
16
(iii)
1
51
(iv)
1
3
(v)
1
30
Question
9
9.
Express
3
10
as a decimal correct to 1 decimal places
(i)
0
(ii)
0.4
(iii)
0.3
(iv)
3
(v)
0.1
Question
10
10.
Express
57
100
as a decimal correct to 2 decimal places
(i)
0.06
(ii)
5.7
(iii)
0.67
(iv)
0.37
(v)
0.57
Question
11
11.
Express
679
1000
as a decimal correct to 3 decimal places
(i)
0.479
(ii)
0.068
(iii)
6.79
(iv)
0.779
(v)
0.679
Question
12
12.
Express
1451
10000
as a decimal correct to 4 decimal places
(i)
1.451
(ii)
-0.0549
(iii)
0.1451
(iv)
0.0145
(v)
0.2451
Question
13
13.
7.3 =
(i)
73
100
(ii)
73
10
(iii)
73
(iv)
730
(v)
73
1000
Question
14
14.
7.7 =
(i)
770
(ii)
77
10
(iii)
77
100
(iv)
77
1000
(v)
77
Question
15
15.
2.33 =
(i)
233
1000
(ii)
233
(iii)
233
10
(iv)
233
10000
(v)
233
100
Question
16
16.
5.386 =
(i)
2693
500
(ii)
2693
5
(iii)
2693
5000
(iv)
2693
50
(v)
2693
50000
Question
17
17.
8.14 =
(i)
407
500
(ii)
814
(iii)
407
5
(iv)
407
5000
(v)
407
50
Question
18
18.
4.26 =
(i)
213
50
(ii)
213
5000
(iii)
426
(iv)
213
500
(v)
213
5
Assignment Key
1) (iii)
2) (iv)
3) (i)
4) (v)
5) (v)
6) (i)
7) (ii)
8) (ii)
9) (iii)
10) (v)
11) (v)
12) (iii)
13) (ii)
14) (ii)
15) (v)
16) (i)
17) (v)
18) (i)
