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Class VI
Class VII
Class VIII
Class IX
Class X
CBSE Grade VII - Algebraic Expressions
Question
1
1.
The sum of the expressions
(
−
6
r
s
+
2
r
+
9
)
,
(
3
r
+
9
s
+
8
)
,
(
2
r
s
+
5
r
+
9
s
)
,
(
−
9
r
s
−
12
s
−
1
)
,
(
−
9
r
+
7
s
−
1
)
is
(
−
12
r
s
+
r
+
13
s
+
15
)
(
−
14
r
s
+
r
+
13
s
+
15
)
(
−
13
r
s
+
3
r
+
13
s
+
15
)
(
−
13
r
s
+
r
+
13
s
+
15
)
(
−
13
r
s
−
r
+
13
s
+
15
)
Question
2
2.
Which of the following algebraic expressions is a monomial?
(
−
5
y
4
−
3
y
3
+
y
2
−
y
+
8
)
(
8
y
4
+
7
y
−
4
)
(
6
y
4
+
4
y
2
)
(
−
8
y
2
)
(
−
5
y
4
−
3
y
3
+
8
y
2
+
5
y
+
4
)
Question
3
3.
The value of
(
7
w
x
−
5
x
−
1
)
+
(
9
w
2
x
y
−
7
w
x
2
+
8
y
)
+
(
5
w
x
2
y
+
9
x
2
y
−
3
y
)
is
(
9
w
2
x
y
+
5
w
x
2
y
−
7
w
x
2
+
7
w
x
+
9
x
2
y
−
5
x
+
5
y
−
1
)
(
9
w
2
x
y
+
8
w
x
2
y
−
7
w
x
2
+
7
w
x
+
9
x
2
y
−
5
x
+
5
y
−
1
)
(
10
w
2
x
y
+
5
w
x
2
y
−
7
w
x
2
+
7
w
x
+
9
x
2
y
−
5
x
+
5
y
−
1
)
(
8
w
2
x
y
+
5
w
x
2
y
−
7
w
x
2
+
7
w
x
+
9
x
2
y
−
5
x
+
5
y
−
1
)
(
9
w
2
x
y
+
2
w
x
2
y
−
7
w
x
2
+
7
w
x
+
9
x
2
y
−
5
x
+
5
y
−
1
)
Question
4
4.
Which of the following is not a factor of
44
x
y
5
z
3
?
22
x
y
4
z
3
22
x
y
5
z
2
22
y
5
z
3
22
x
2
y
6
z
4
22
x
y
z
3
Question
5
5.
The value of
4
5
s
+
1
4
s
+
1
2
s
+
1
5
s
is
9
4
s
3
2
s
5
2
s
5
4
s
7
4
s
Question
6
6.
Which of the following algebraic expressions is a constant polynomial?
(
−
9
f
4
+
4
)
2
f
2
(
8
f
4
+
7
f
3
+
4
f
2
−
8
f
+
7
)
(
−
8
)
(
9
f
4
−
7
f
2
−
5
)
Question
7
7.
The value of
3
4
d
3
−
3
5
d
3
is
1
6
d
3
3
22
d
3
3
20
d
3
1
4
d
3
1
20
d
3
Question
8
8.
The value of the polynomial
(
−
4
j
k
)
at
j
=
(-2)
,
k
=
4
,
l
=
(-1)
is
30
31
33
32
35
Question
9
9.
The value of
(
9
r
s
t
+
5
r
s
+
4
r
)
+
(
8
r
s
t
−
3
r
s
+
6
r
)
is
(
17
r
s
t
+
5
r
s
+
10
r
)
(
16
r
s
t
+
2
r
s
+
10
r
)
(
17
r
s
t
+
2
r
s
+
10
r
)
(
18
r
s
t
+
2
r
s
+
10
r
)
(
17
r
s
t
+
10
r
)
Question
10
10.
The value of
(
−
6
k
3
)
−
8
k
3
is
(
−
13
k
3
)
(
−
17
k
3
)
(
−
11
k
3
)
(
−
15
k
3
)
(
−
14
k
3
)
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