EduSahara™ Assignment
Name : Rational Numbers and their Decimal Expansions
Chapter : Rational and Irrational Numbers
Grade : ICSE Grade IX
License : Non Commercial Use
Question
1
1.
Express
9
10
as a decimal correct to 1 decimal places
(i)
9
(ii)
1
(iii)
0.7
(iv)
0.9
(v)
0.1
Question
2
2.
Express
79
100
as a decimal correct to 2 decimal places
(i)
0.59
(ii)
7.9
(iii)
0.79
(iv)
0.89
(v)
0.08
Question
3
3.
Express
343
1000
as a decimal correct to 3 decimal places
(i)
0.143
(ii)
0.034
(iii)
0.443
(iv)
0.343
(v)
3.43
Question
4
4.
Express
1071
10000
as a decimal correct to 4 decimal places
(i)
0.0107
(ii)
1.071
(iii)
0.2071
(iv)
0.1071
(v)
-0.0929
Question
5
5.
2.3 =
(i)
23
10
(ii)
23
1000
(iii)
23
(iv)
230
(v)
23
100
Question
6
6.
7.1 =
(i)
71
10
(ii)
71
(iii)
710
(iv)
71
100
(v)
71
1000
Question
7
7.
6.24 =
(i)
312
5
(ii)
78
125
(iii)
39
625
(iv)
156
25
(v)
624
Question
8
8.
1.350 =
(i)
27
2000
(ii)
135
(iii)
27
200
(iv)
27
2
(v)
27
20
Question
9
9.
5.4 =
(i)
27
50
(ii)
27
5
(iii)
27
500
(iv)
540
(v)
54
Question
10
10.
6.17 =
(i)
617
(ii)
617
100
(iii)
617
10
(iv)
617
10000
(v)
617
1000
Question
11
11.
10.37 =
(i)
1037
1000
(ii)
1037
100
(iii)
1037
10
(iv)
1037
(v)
1037
10000
Question
12
12.
9.363 =
(i)
9363
10
(ii)
9363
100
(iii)
9363
10000
(iv)
9363
1000
(v)
9363
100000
Question
13
13.
The recurring part of the decimal
4.
703
is
(i)
7037703
(ii)
4.703
(iii)
70374
(iv)
703703
(v)
703
Question
14
14.
The recurring part of the decimal
12.88888888888888...
is
(i)
888
(ii)
8
(iii)
88
(iv)
12.8
(v)
881
Question
15
15.
Convert the non-terminating recurring decimal
7.
7
to rational number
(i)
8
(ii)
10
(iii)
68
9
(iv)
70
9
(v)
70
11
Question
16
16.
Convert the non-terminating recurring decimal
24.88888888888888...
to rational number
(i)
74
3
(ii)
224
11
(iii)
226
9
(iv)
32
(v)
224
9
Question
17
17.
Convert the fraction
547
21
to non-terminating recurring decimal
(i)
260.
476190
(ii)
26.
047619
(iii)
0.26
047619
(iv)
2.6
047619
(v)
2604.
761904
Question
18
18.
Convert the fraction
205
18
to non-terminating recurring decimal
(i)
11.3
8
(ii)
1138.
8
(iii)
0.
1
(iv)
113.
8
(v)
1.13
8
Question
19
19.
Which of the following fractions converts to a non-terminating recurring decimal?
(i)
2145
125
(ii)
454
25
(iii)
858
25
(iv)
241
18
(v)
5440
32
Question
20
20.
Which of the following fractions converts to a terminating decimal?
(i)
283
108
(ii)
283
18
(iii)
6080
40
(iv)
269
18
(v)
283
270
Question
21
21.
Which of the following is a pure recurring decimal?
(i)
0.43333333333333...
(ii)
2.03703703703703...
(iii)
12.38888888888888...
(iv)
14.72222222222222...
(v)
24.27777777777777...
Question
22
22.
Which of the following is a mixed recurring decimal?
(i)
7.19047619047619...
(ii)
30.77777777777777...
(iii)
0.33333333333333...
(iv)
14.94444444444444...
(v)
17.44444444444444...
Question
23
23.
Express
3
4
as a decimal correct to 2 decimal places
(i)
0.55
(ii)
0.85
(iii)
7.5
(iv)
0.07
(v)
0.75
Question
24
24.
Express
4
5
as a decimal correct to 2 decimal places
(i)
0.8
(ii)
0.08
(iii)
8
(iv)
0.9
(v)
0.6
Question
25
25.
Express
4
5
as a decimal correct to 2 decimal places
(i)
0.8
(ii)
0.6
(iii)
0.9
(iv)
8
(v)
0.08
Question
26
26.
Express
47
85
as a decimal correct to 2 decimal places
(i)
0.55
(ii)
0.06
(iii)
0.65
(iv)
5.53
(v)
0.35
Question
27
27.
Express
9
8
as a decimal correct to 1 decimal places
(i)
1.1
(ii)
1.2
(iii)
0.9
(iv)
1.3
(v)
1
Question
28
28.
Express
1
10
as a decimal correct to 2 decimal places
(i)
0.3
(ii)
0
(iii)
0.1
(iv)
0.2
(v)
-0.1
Question
29
29.
Express
1
3
as a decimal correct to 3 decimal places
(i)
0.333
(ii)
0.133
(iii)
0.533
(iv)
0.233
(v)
0.433
Question
30
30.
Express
1
8
as a decimal correct to 4 decimal places
(i)
0.125
(ii)
-0.075
(iii)
0.325
(iv)
0.225
(v)
0.025
Question
31
31.
Express
34
21
as a decimal correct to 1 decimal places
(i)
1.5
(ii)
1.4
(iii)
1.6
(iv)
1.8
(v)
1.7
Question
32
32.
Express
63
13
as a decimal correct to 2 decimal places
(i)
4.65
(ii)
4.85
(iii)
4.95
(iv)
4.75
(v)
5.05
Question
33
33.
Express
17
46
as a decimal correct to 3 decimal places
(i)
0.37
(ii)
0.47
(iii)
0.57
(iv)
0.17
(v)
0.27
Question
34
34.
Express
13
98
as a decimal correct to 4 decimal places
(i)
0.3327
(ii)
0.1327
(iii)
-0.0673
(iv)
0.2327
(v)
0.0327
Question
35
35.
Express
117
485
as a decimal correct to 3 decimal places
(i)
0.341
(ii)
0.041
(iii)
0.441
(iv)
0.241
(v)
0.141
Question
36
36.
Express
3883
5690
as a decimal correct to 4 decimal places
(i)
0.8824
(ii)
0.7824
(iii)
0.4824
(iv)
0.6824
(v)
0.5824
Assignment Key
1) (iv)
2) (iii)
3) (iv)
4) (iv)
5) (i)
6) (i)
7) (iv)
8) (v)
9) (ii)
10) (ii)
11) (ii)
12) (iv)
13) (v)
14) (ii)
15) (iv)
16) (v)
17) (ii)
18) (i)
19) (iv)
20) (iii)
21) (ii)
22) (iv)
23) (v)
24) (i)
25) (i)
26) (i)
27) (i)
28) (iii)
29) (i)
30) (i)
31) (iii)
32) (ii)
33) (i)
34) (ii)
35) (iv)
36) (iv)