CBSE Class 8 Maths Worksheet
Algebraic Expressions And Identities
1.
Find the product: (a2 + b) (a + b2)
2.
1. Which of the following is the numerical coefficient of x2y2?
3.
Find the squares by using the identities: (b – 7)2
4.
x + y – xy is an example of __________
A)
Binomial Equation
B)
Trinomial Equation
C)
Linear Equation
D)
Quadratic Equation
5.
Simplify 2x(2x – 3) + 5 and find its value at x =2
6.
Using (h + a) (h + b) = h2 + (a + b) h + ab, find 5.2 × 5.1
7.
Use the identity (h + a) (h + b) = h2 + (a + b) h + ab to find product: (hyz – 4) (hyz – 2)
8.
Find the product of m, – mn, mnp
9.
Use the identity (h + a) (h + b) = h2 + (a + b) h + ab to find product: (4h – 5) (4h – 1)
10.
Carry out the multiplication of the expression: 4p, q + r
11.
Carry out the multiplication of the expression: pq + qr + rp,
12.
Find the product of monomial. -5y ,(-5y)
13.
Multiply the binomials: (a2 + 2b2) and (5a – 3b)
14.
Find the volume of each rectangular boh with given length, breadth and height. Length, breadth and height are a, 2b and 3c respectively.
15.
Add: 5m (3 – m) and 6m2 – 13m
16.
Use the identity (h + a) (h + b) = h2 + (a + b) h + ab to find product: (4h + 5) (4h – 1)
17.
Find the areas of rectangles with the following pairs of monomials as their lengths and breadths. (2l2m, 3lm2)
18.
Use a suitable identity to get the product: (6h – 7) (6h + 7)
19.
Fill in the blanks: The coefficient of 7hy is ______
20.
Use a suitable identity to get the product: (2y + 5) (2y + 5)
CBSE Class 8 Maths Worksheet
Algebraic Expressions And Identities
Answers
1.
a 3 + a 2b 2 + ab + b 3
2.
Option B
3.
4.
Option B
5.
Option C
6.
7.
h 2 y 2 z 2 – 6hyz + 8
8.
1024y6
9.
16h 2 – 24h + 5
10.
4pq+4pr
11.
0
12.
25y2
13.
5a3 – 3a2b + 10ab2 – 6b3
14.
4h4y4
15.
m2 + 2m
16.
16h 2 + 16h – 5
17.
120h6y6
18.
19.
7
20.
