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Factorisation

ICSE · Class 8 · Mathematics

Step-by-step guide to study Factorisation in ICSE Class 8 Mathematics. Topics to cover, practice strategy, and time allocation.

62 questions24 flashcards5 concepts

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Study Plan

1
Day 1–2

Learn the Theory

Read the textbook chapter carefully. Note down definitions, formulas, and key concepts.

2
Day 3

Practice Problems

Solve textbook exercises and additional practice questions. There are 62 questions available for this chapter.

3
Day 4

Revise & Test

Revise key formulas and concepts without looking at notes. Take a practice quiz to test your understanding. Mark weak areas for re-revision.

4
Day 7

Spaced Revision

Revisit Factorisation after a week. Use flashcards for quick recall. Solve previous year questions from this chapter.

What to Focus On

  • A factor is one part of a product.
  • Factorisation is the reverse of multiplication.
  • An expression can be factorised only if it can be written as a product of simpler expressions.

  • Look for the greatest common factor in all terms.
  • Include both number and variable part.
  • The common factor may even be negative if that helps make the bracket simpler.

  • Use grouping when there are four, six, or another even number of terms.
  • Choose groups so that each group has a common factor.
  • After factorising each group, look for one common bracket.

Common Mistakes to Avoid

The largest common factor can be any common term, even if it is not the largest monomial dividing every term.

A trinomial can be factorised by splitting the middle term into any two terms whose sum matches, even if their product is wrong.

The sign of the two numbers in trinomial factorisation depends only on the product, not on the sum.

Memory Tips

Meaning of factorisation

Factor of a product

Common monomial factor method

Largest common monomial factor of 5x^2 - 10x

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Frequently Asked Questions

What are the important topics in Factorisation for ICSE Class 8 Mathematics?
Factorisation 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 Factorisation — ICSE Class 8 Mathematics?
Understand the core concepts first, then work through the 62 practice questions available for this chapter. Revise formulas and definitions regularly, and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

More resources for Factorisation

All 25 chapters — ICSE Class 8 Mathematics Study Plan

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