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
1.
1
is
(i)
1.1
(ii)
1
(iii)
11
(iv)
111
Question
2
2.
The recurring part of the decimal
30.55555555555555...
is
(i)
553
(ii)
30.5
(iii)
555
(iv)
5
(v)
55
Question
3
3.
Convert the non-terminating recurring decimal
28.
7
to rational number
(i)
259
9
(ii)
37
(iii)
259
11
(iv)
29
(v)
257
9
Question
4
4.
Convert the non-terminating recurring decimal
0.33333333333333...
to rational number
(i)
1
5
(ii)
1
(iii)
1
3
(iv)
(
-1
3
)
Question
5
5.
Convert the fraction
1
3
to non-terminating recurring decimal
(i)
0.
0
(ii)
3.
3
(iii)
33.
3
(iv)
0.0
3
(v)
0.
3
Question
6
6.
Convert the fraction
365
18
to non-terminating recurring decimal
(i)
2027.
7
(ii)
202.
7
(iii)
0.202
7
(iv)
20.2
7
(v)
2.02
7
Question
7
7.
Which of the following fractions converts to a non-terminating recurring decimal?
(i)
5472
160
(ii)
1425
16
(iii)
1457
32
(iv)
187
9
(v)
2850
64
Question
8
8.
Which of the following fractions converts to a terminating decimal?
(i)
1
3
(ii)
253
18
(iii)
253
180
(iv)
253
108
(v)
2860
320
Question
9
9.
Express
9
10
as a decimal correct to 1 decimal places
(i)
0.7
(ii)
0.9
(iii)
0.1
(iv)
9
(v)
1
Question
10
10.
Express
63
100
as a decimal correct to 2 decimal places
(i)
0.63
(ii)
0.43
(iii)
0.73
(iv)
0.06
(v)
6.3
Question
11
11.
Express
669
1000
as a decimal correct to 3 decimal places
(i)
0.669
(ii)
0.469
(iii)
0.067
(iv)
6.69
(v)
0.769
Question
12
12.
Express
2871
10000
as a decimal correct to 4 decimal places
(i)
2.871
(ii)
0.2871
(iii)
0.0871
(iv)
0.3871
(v)
0.0287
Question
13
13.
2.6 =
(i)
260
(ii)
13
50
(iii)
26
(iv)
13
5
(v)
13
500
Question
14
14.
2.7 =
(i)
27
100
(ii)
27
1000
(iii)
270
(iv)
27
10
(v)
27
Question
15
15.
18.49 =
(i)
1849
10
(ii)
1849
1000
(iii)
1849
(iv)
1849
100
(v)
1849
10000
Question
16
16.
9.513 =
(i)
9513
100
(ii)
9513
1000
(iii)
9513
10
(iv)
9513
10000
(v)
9513
100000
Question
17
17.
4.15 =
(i)
83
20
(ii)
415
(iii)
83
2000
(iv)
83
200
(v)
83
2
Question
18
18.
20.35 =
(i)
407
20
(ii)
407
200
(iii)
2035
(iv)
407
2000
(v)
407
2
Assignment Key
1) (ii)
2) (iv)
3) (i)
4) (iii)
5) (v)
6) (iv)
7) (iv)
8) (v)
9) (ii)
10) (i)
11) (i)
12) (ii)
13) (iv)
14) (iv)
15) (iv)
16) (ii)
17) (i)
18) (i)
