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Class 8 Maths Chapter 9 Algebraic Expressions And Identities Quiz 3 (25 MCQs)

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1. If we multiply 5x and (-4xyz), then we get:
2. If ab-bc is added to bc-ca, then the result will be .....
3. A number increased by 9
4. The product of 7x and 3y is
5. The expression x + 3 is in
6. A ..... is the numerical factor of a variable term in an algebraic expression.
7. What is the value of 5x$^{25}$-3x$^{32}$ + 2x$^{-12}$ at x=1?
8. (3a-2x)/(3x-a) when a=8 and x=4
9. If we subtract 4a-7ab + 3b + 12 from 12a-9ab + 5b-3, then the answer is:
10. On dividing p(4p$^{2}$-16) by 4p (p-2), we get
11. The algebraic expression 3x+2y+6 is a:
12. The product of 5x and 2y is
13. 3w$^{2}$-(2x)$^{2}$ when w=10 and x=8
14. Simplify the expression (simplificar):7+3(1-2x)
15. What is a algebraic expression??
16. The length of a rectangle is decreased by 3 and breadth is increased by 4. The new area of the rectangle found after changing it's dimensions is same as that of original rectangle before any changes were made.Which among below is a correct equation?Consider length of rectangle to be 'l' and breadth of rectangle to be 'b'
17. What are like terms formed from?
18. If we simplify the expression 3xy + 4yz-2zx + 5yz-3xy + 6zx, what is the result?
19. If we add, 7xy + 5yz-3zx, 4yz + 9zx-4y and-3xz + 5x-2xy, then the answer is:
20. Solve (4 + z)(9-z) using suitable identity.
21. Sum of p-q + pq, q + r-qr and r-p-rp is .....
22. Solve (x$^{ }$-1)(1-x) using suitable identity
23. The simplified form of the expression (y$^{2}$ + 5)(y$^{2 }$-3) is
24. Which of the following is a like term as 8xy?
25. What is the product of (x+a) and (x+b)?
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