Real Numbers
CBSE · Class 10 · Mathematics
Quick revision notes for Real Numbers — CBSE Class 10 Mathematics. Key concepts, formulas, and definitions for last-minute revision.
Key Topics to Revise
The Fundamental Theorem of Arithmetic
- Every composite number can be expressed as a product of prime numbers in a unique way (except for the order of factors)
- Prime factorization is the process of writing a number as a product of its prime factors
- The uniqueness of prime factorization is what makes this theorem fundamental to number theory
Revisiting Irrational Numbers
- Irrational numbers cannot be expressed in the form p/q where p and q are integers and q ≠ 0
- √2, √3, √5, and in general √p (where p is prime) are all irrational
- Proof by contradiction is the standard method to prove irrationality
Euclid's Division Algorithm
- For any two positive integers a and b, there exist unique integers q and r such that a = bq + r, where 0 ≤ r < b
- This is the mathematical form of the division algorithm we use in arithmetic
- The algorithm is useful for finding HCF of two numbers efficiently
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What are the important topics in Real Numbers for CBSE Class 10 Mathematics?
Real Numbers covers several key topics that are frequently asked in CBSE Class 10 board exams. Focus on the core concepts listed on this page and practise related questions to build confidence.
How to score full marks in Real Numbers — CBSE Class 10 Mathematics?
Start by understanding all key concepts. Practise previous year questions from this chapter. Revise formulas and definitions regularly. Use flashcards for quick revision before the exam.
Sources & Official References
- NCERT Official — ncert.nic.in
- CBSE Academic — cbseacademic.nic.in
- CBSE Official — cbse.gov.in
- National Education Policy 2020 — education.gov.in
Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.
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