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Revision Notes

Factors and Multiples — Revision Notes

ICSE · Class 4 · Mathematics

Factors and Multiples revision notes for ICSE Class 4 Mathematics: 4 topics in quick points. Part of the ICSE Class 4 Mathematics syllabus.

47 questions30 flashcards3 formulas & key relations5 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?
Key topics in Factors and Multiples include Factors, Prime and Composite Numbers, Prime Factors, Multiples. Study these first, then practise questions on each for Class 4 exams.
How should I revise Factors and Multiples for Class 4 exams?
Learn the core ideas first, then work through the 47 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.

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All ICSE Class 4 Mathematics Revision Notes

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