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Algebraic Expressions and Identities Extra questions

In this page we have Extra questions for Algebraic Expressions and Identities Class 8 Maths Chapter 8 . Hope you like them and do not forget to like , social share and comment at the end of the page.

Question 1
Find the product of the following expression
(a) 11, 7x
(b) - 4x, y
(c) - 4p, pq, pr
(d)4p³, - 3p, p²
(e) 3mn, 4n
(f) 51p, p², p⁸
(g) 2p, 4q, 8r
(h) xy, 2x²y, 2xy², xy
(i) a, 2b, 3c
(j) xy, yz, zx
(k) 2, 4y, 8y²,16y³
(l) a, 2b, 3c, 6abc
(m) p, - pq, pqr

Answer

(a) 77x
(b)-4xy
(c) -4p³qr
(d) -12p⁶
(e) 12mn²
(f)51p¹¹
(g) 64pqr
(h) 4x⁵y⁵
(i) 6abc
(j)x²y²x²
(k) 1024y⁶
(l) 36a²b²c²
(m) -p³q²r

Question 2
Volume of the cuboid with Length as 2x,breath as 2y and Height as 2 z is given by
(a) xyz
(b) 8xyz
(c) 2x+2y+2z
(d) None of these

Answer

Volume of the cuboid= L*B*H= (2x)(2y)(2z)=8xyz
So Answer is (b)

Question 3
The sum of area of the squares of side 2a and 2b will be
(a) 2a+ 2b
(b) 4a² + 4b²
(c) ab
(d) None of these

Answer

Area of Square= (Side)²
So The sum of area of the squares of side 2a and 2b=4a² + 4b²
So Answer is (b)

Summary

This Extra questions for Algebraic Expressions and Identities Class 8 Maths is prepared keeping in mind the latest syllabus of CBSE . This has been designed in a way to improve the academic performance of the students. If you find mistakes , please do provide the feedback on the mail.

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