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Revision Notes

Factors and Multiples

ICSE · Class 4 · Mathematics

Quick revision notes for Factors and Multiples — ICSE Class 4 Mathematics. Key concepts, formulas, and definitions for last-minute revision.

47 questions30 flashcards5 concepts

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Key Topics to Revise

1

1. Factors

  • A factor of a number divides it completely without leaving any remainder.
  • 1 is a factor of every number.
  • Every number is a factor of itself.
2

2. Prime and Composite Numbers

  • Prime numbers have exactly two factors: 1 and the number itself.
  • Composite numbers have more than two factors.
  • 1 is neither prime nor composite — it has only one factor.
3

3. Prime Factors

  • Prime factors are factors that are also prime numbers.
  • Every composite number can be written as a product of prime factors.
  • Two methods: Factor Tree and Prime Factorization.
4

4. Multiples

  • A multiple is the product of a number and any counting number (1, 2, 3, ...).
  • Every number is a multiple of itself and 1.
  • 0 is a multiple of every number.

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Full Notes

Key Concepts

A factor of a numberA multiple of a numberA prime number has only twoThe largest factor that is commonThe smallest multiple that is common

Frequently Asked Questions

What are the important topics in Factors and Multiples for ICSE Class 4 Mathematics?
Factors and Multiples covers several key topics that are frequently asked in ICSE Class 4 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Factors and Multiples — ICSE Class 4 Mathematics?
Understand the core concepts first, then work through the 47 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.

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