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Proportional Reasoning-2 — Study Plan

CBSE · Class 8 · Mathematics

A step-by-step study plan for Proportional Reasoning-2, CBSE Class 8 Mathematics: what to learn first, what to practise and when to revise.

55 questions76 flashcards5 formulas & key relations5 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 ideas. Focus on: 1. Proportionality and Cross-Multiplication, 2. Ratios with More than Two Terms, 3. Dividing a Whole in a Ratio.

2
Day 3

Practise

Solve the textbook exercises and extra practice questions. There are 55 questions available for this chapter.

3
Day 4

Revise & Test

Revise key points without looking at your notes. Take a practice quiz and mark weak areas for another pass.

4
Day 7

Spaced Revision

Come back to Proportional Reasoning-2 after a week. Use flashcards for quick recall and try past exam questions on this chapter.

What to Focus On

  • Proportional ratios have the same value.
  • Use a × d = b × c to test two ratios.
  • Idli batter ratios 6 : 3 and 4 : 2 are proportional.
  • Ratios can have more than two terms.
  • If one term is scaled, all terms must be scaled by the same factor.
  • Puneet’s spice mix ratio is 4 : 2 : 1 : 0.5.
  • Add all parts before dividing a whole.
  • 12 divided in the ratio 2 : 1 gives 8 and 4.
  • Triangle angles always sum to 180°.

Common Mistakes to Avoid

Any pair of ratios with the same numbers in different order is proportional.

A Representative Fraction gives road distance on a map.

In a multi-term ratio, only the first two terms need to be scaled.

Memory Tips

Cross-multiplication test for proportional ratios

Representative Fraction on maps

More than two terms in a ratio

Multi-term proportional equality

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Frequently Asked Questions

What are the important topics in Proportional Reasoning-2 for CBSE Class 8 Mathematics?
Key topics in Proportional Reasoning-2 include Proportionality and Cross-Multiplication, Ratios with More than Two Terms, Dividing a Whole in a Ratio, Ratios in Maps and Representative Fraction. Study these first, then practise questions on each for Class 8 exams.
How should I revise Proportional Reasoning-2 for Class 8 exams?
Learn the core ideas first, then work through the 55 practice questions on Proportional Reasoning-2. Revise 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 Proportional Reasoning-2

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