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Class VI
Class VII
Class VIII
Class IX
Class X
CBSE Grade IX - Number Systems
Question
1
1.
Which of the following symbols represent the set of Whole numbers ?
Q'
R
N
W
Q
Question
2
2.
Convert the non-terminating recurring decimal
15.
8
to rational number
47
3
143
9
13
145
9
143
7
Question
3
3.
The value of
3
(
-1
3
)
÷
3
(
5
3
)
2
(
-1
125
)
1
125
(
-3
125
)
(
-1
125
)
(
-1
123
)
Question
4
4.
(
−
4
√
5
−
8
√
9
−
2
√
6
)
−
(
6
−
√
6
−
9
√
7
)
=
(
−
4
√
5
−
30
−
√
6
+
9
√
7
)
(
−
4
√
3
−
30
−
√
6
+
9
√
7
)
(
−
4
√
5
−
30
−
√
6
+
9
√
9
)
(
−
4
√
5
−
29
−
√
6
+
9
√
7
)
(
−
4
√
5
−
30
−
4
√
6
+
9
√
7
)
Question
5
5.
Simplify the expression
(
9
7
)
2
✕
(
9
7
)
2
✕
(
9
7
)
2
(
27
7
)
5
(
21
5
)
2
(
11
3
)
2
(
25
7
)
2
(
27
7
)
2
Question
6
6.
Express
6327
10000
as a decimal correct to 4 decimal places
0.7327
0.0633
0.4327
6.327
0.6327
Question
7
7.
4
√
5
9
=
(
9
4
)
5
(
9
4
)
8
(
4
9
)
5
(
9
4
)
2
(
9
2
)
5
Question
8
8.
Find the difference of the rational numbers at the points labelled with letters G and H
(
-1
2
)
(
-7
12
)
(
-7
8
)
(
-7
10
)
(
-9
10
)
Question
9
9.
(
−
9
√
8
)
−
(
−
4
√
8
)
=
(
−
10
√
-1
)
(
−
20
)
(
−
10
√
4
)
(
−
10
4
√
2
)
(
−
10
√
2
)
Question
10
10.
3.1 =
31
10
31
100
31
310
31
1000
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