Skip to main content
Super TutorResources
Chapter 5 of 10
QuestionsNotesFlashcardsSummaryFormulasQuizConceptsSyllabusPlan
Chapter Summary

Prime Time

CBSE · Class 6 · Mathematics

Summary of Prime Time for CBSE Class 6 Mathematics. Key concepts, important points, and chapter overview.

41 questions60 flashcards5 concepts

Interactive on Super Tutor

Studying Prime Time? Get the full interactive chapter.

Quizzes, flashcards, AI doubt-solver and a step-by-step study plan — built for chapter summary and more.

Try Super Tutor — Free

1,000+ Class 6 students started this chapter today

Overview

Prime numbers, composite numbers, factors, common factors, co-prime numbers, prime factorisation, and divisibility tests are the main ideas in this chapter. The chapter also shows how these ideas help in games, puzzles, and checking number properties quickly.

Key Concepts

A factor divides a number exactly

A factor divides a number exactly. The factors of 24 are 1, 2, 3, 4, 6, 8, 12, and 24. When two numbers share factors, those are called common factors

Numbers with exactly two factors

Numbers with exactly two factors are prime numbers. The first few primes are 2, 3, 5, 7, 11, 13, 17, and 19. A prime number has only 1 and itself as f

Numbers with more than two factors

Numbers with more than two factors are called composite numbers. Examples include 4, 6, 8, 9, 10, 12, 14, 15, 16, 18, and 20. Numbers like 8 and 9 are

The number 1 is neither prime

The number 1 is neither prime nor composite. It has only one factor, which is 1 itself.

Two numbers are co

Two numbers are co-prime if they have no common factor other than 1. For example, 4 and 9 are co-prime. The pair 15 and 39 is not co-prime because the

Learning Objectives

  • Understand the difference between prime numbers, composite numbers, and 1.
  • Find factors and common factors of numbers.
  • Identify co-prime numbers using common factors and prime factorisation.
  • Write prime factorisation of numbers in increasing order.
  • Use prime factorisation to check divisibility and co-primality.

Frequently Asked Questions

What are the important topics in Prime Time for CBSE Class 6 Mathematics?
Prime Time covers several key topics that are frequently asked in CBSE Class 6 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Prime Time — CBSE Class 6 Mathematics?
Understand the core concepts first, then work through the 41 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 Prime Time

All 10 chapters — CBSE Class 6 Mathematics Chapter Summary

For serious students

Get the full Prime Time chapter — for free.

Quizzes, flashcards, AI doubt-solver and a step-by-step study plan for CBSE Class 6 Mathematics.

Try Super Tutor Free
Try the full chapter — Free