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Chapter Summary

Unitary Method — Chapter Summary

ICSE · Class 7 · Mathematics

Summary of Unitary Method for ICSE Class 7 Mathematics. Key concepts: The method in which the value, Increase in one quantity and Increase in one quantity.

42 questions20 flashcards10 formulas & key relations5 concepts

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Overview

The unitary method is a way of finding the value of one unit first and then using it to find the required value. It is useful in problems involving money, cloth, men doing work, speed, time, cargo, watches, horses, and pipes. Two main types of variation appear in such problems: direct variation and

Key Concepts

The method in which the value

The method in which the value of a unit quantity is first calculated to get the value of a required quantity is called the unitary method.

Increase in one quantity causes increase

Increase in one quantity causes increase in the other and decrease in one quantity causes decrease in the other.

Increase in one quantity causes decrease

Increase in one quantity causes decrease in the other and decrease in one quantity causes increase in the other.

one day's work = (1) /

one day's work = (1) / (No. of days required to complete the work)

number of days required to complete

number of days required to complete a work = (1) / (One day work)

Learning Objectives

  • Understand the meaning of the unitary method
  • Identify direct variation and inverse variation
  • Use the unitary method to solve money, cloth, and work problems
  • Apply arrow method for direct and inverse variation
  • Convert units correctly before solving time-based problems

Frequently Asked Questions

What are the important topics in Unitary Method for ICSE Class 7 Mathematics?
Key topics in Unitary Method include Core Idea of the Unitary Method, Direct Variation, Inverse Variation, Worked Examples from Direct Variation. Study these first, then practise questions on each for Class 7 exams.
How should I revise Unitary Method for Class 7 exams?
Learn the core ideas first, then work through the 42 practice questions on Unitary Method. 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 Unitary Method

All ICSE Class 7 Mathematics Chapter Summary

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