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Chapter Summary

Factors and Multiples — Chapter Summary

ICSE · Class 5 · Mathematics

Summary of Factors and Multiples for ICSE Class 5 Mathematics. Part of the ICSE Class 5 Mathematics syllabus. In this chapter, we explore the exciting.

46 questions35 flashcards4 formulas & key relations4 concepts

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Overview

In this chapter, we explore the exciting world of numbers through the concepts of factors and multiples. These ideas help us understand how numbers are built and how they relate to each other. Whether we're dividing chocolates equally among friends or finding the smallest number that can be divided

Key Concepts

A factor is a number

A factor is a number that divides another number exactly without leaving a remainder. For example, 3 is a factor of 12 because 12 ÷ 3 = 4. A multiple

A prime number has only two

A prime number has only two factors: 1 and itself. For example, 7 is a prime number because only 1 and 7 divide it. A composite number has more than t

The Highest Common Factor (HCF)

The Highest Common Factor (HCF) is the largest number that divides two or more numbers exactly. The Least Common Multiple (LCM) is the smallest number

These are shortcuts to check if

These are shortcuts to check if a number is divisible by another without doing actual division. For example, a number is divisible by 2 if it ends in

Learning Objectives

  • Understand the meaning of factors and multiples
  • Identify prime and composite numbers
  • Learn divisibility rules for numbers 2 to 12
  • Find Highest Common Factor (HCF) using different methods
  • Find Least Common Multiple (LCM) using prime factorization and division method

Frequently Asked Questions

What are the important topics in Factors and Multiples for ICSE Class 5 Mathematics?
Key topics in Factors and Multiples include Factors and Multiples, Prime and Composite Numbers, Co-prime and Twin Prime Numbers, HCF (Highest Common Factor). Study these first, then practise questions on each for Class 5 exams.
How should I revise Factors and Multiples for Class 5 exams?
Learn the core ideas first, then work through the 46 practice questions on Factors and Multiples. 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 Factors and Multiples

All ICSE Class 5 Mathematics Chapter Summary

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