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Important Questions

Algebraic Expressions

ICSE · Class 8 · Mathematics

Most important questions from Algebraic Expressions for ICSE Class 8 Mathematics board exam 2026. MCQs, short answer, and long answer questions with marks.

37 questions25 flashcards5 concepts

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37 Questions·
multiple choicemultiple correct

Sample Questions

1multiple choice
3 marks

Simplify 84 - 7[-11x - 4{-17x + 3(8 - (9 - 5x))}].

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21x

First remove the innermost bracket: 8 - (9 - 5x) = 8 - 9 + 5x = 5x - 1. Then simplify inside the curly brackets: -17x + 3(5x - 1) = -17x + 15x - 3 = -2x - 3. Then the square bracket: -11x - 4(-2x - 3) = -11x + 8x + 12 = -3x + 12. Finally: 84 - 7(-3x + 12) = 84 + 21x - 84 = 21x.

2multiple choice
3 marks

Find the result of (7x + 4y - 5z + 5) + (6x - 7z - 8) - (12x + 3y - z).

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x + y - 11z - 3

First add the first two expressions: (7x + 4y - 5z + 5) + (6x - 7z - 8) = 13x + 4y - 12z - 3. Now subtract the third expression by changing its signs: 13x + 4y - 12z - 3 - 12x - 3y + z. Combine like terms: x + y - 11z - 3.

3multiple choice
3 marks

Divide -50a^2b^3 by -15a^4b^2 and simplify the result.

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10b / 3a^2

Use division of a monomial by another monomial. Divide the coefficients: -50 ÷ -15 = 10/3. Divide the literals: a^2 ÷ a^4 = 1/a^2 and b^3 ÷ b^2 = b. So the result is 10b / 3a^2.

4multiple choice
3 marks

Multiply -5xy^2, -3x^2yz and 8yz^2. What is the product?

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120x^3y^4z^3

Multiply the numerical coefficients first: -5 × -3 × 8 = 120. Now multiply the literal parts: x × x^2 = x^3, y^2 × y × y = y^4, z × z^2 = z^3. So the product is 120x^3y^4z^3.

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Frequently Asked Questions

What are the important topics in Algebraic Expressions for ICSE Class 8 Mathematics?
Algebraic Expressions covers several key topics that are frequently asked in ICSE Class 8 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Algebraic Expressions — ICSE Class 8 Mathematics?
Understand the core concepts first, then work through the 37 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.
How many important questions are there in Algebraic Expressions?
There are 37 practice questions available for Algebraic Expressions. These cover multiple question types including MCQs, short answer, and long answer questions.

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