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Chapter Summary

Ratio and Proportion

ICSE · Class 7 · Mathematics

Summary of Ratio and Proportion for ICSE Class 7 Mathematics. Key concepts, important points, and chapter overview.

52 questions24 flashcards5 concepts

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Overview

Ratio is a comparison of two quantities of the same kind with the same unit. It is written with a colon and gives a pure number with no unit. Ratio and proportion help compare quantities, simplify relationships, and solve problems involving sharing, scaling, and unknown terms.

Key Concepts

A ratio is a relationship between

A ratio is a relationship between two quantities of the same kind with same unit, obtained by dividing the first quantity by the second. It is written

In the ratio 3

In the ratio 3:4, 3 is the antecedent and 4 is the consequent. The two terms of a ratio are co-prime in simplest form.

A ratio is in simplest form

A ratio is in simplest form when both terms are co-prime, so their H.C.F. is 1. For example, 4:5 is already in simplest form, while 6:8 is not. To sim

A ratio with fractions can be

A ratio with fractions can be converted into whole numbers by multiplying each term by the L.C.M. of the denominators. If each term of a ratio is mult

If a quantity is divided

If a quantity is divided in the ratio 2:3, the whole quantity is split into 2 + 3 = 5 equal parts, and the shares are taken in that proportion.

Learning Objectives

  • Define ratio and proportion correctly
  • Identify antecedent and consequent in a ratio
  • Write ratios in simplest form
  • Convert fractional ratios into whole number ratios
  • Divide a quantity in a given ratio

Frequently Asked Questions

What are the important topics in Ratio and Proportion for ICSE Class 7 Mathematics?
Ratio and Proportion covers several key topics that are frequently asked in ICSE Class 7 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Ratio and Proportion — ICSE Class 7 Mathematics?
Understand the core concepts first, then work through the 52 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 Ratio and Proportion

All 25 chapters — ICSE Class 7 Mathematics Chapter Summary

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