CBSE Class 10 Maths Chapter 1 Real Numbers Syllabus 2026–27

The Real Numbers chapter introduces fundamental concepts related to number systems, divisibility, and prime factorisation. It helps you understand how numbers are aligned and how they behave under different mathematical operations. This chapter includes important ideas such as Euclid’s Division Lemma, HCF and LCM, and the Fundamental Theorem of Arithmetic.

These concepts are essential for building a strong base in Class 10 Maths. A clear understanding of Real Numbers improves your problem-solving skills and helps you apply logical methods to solve questions. It is an important chapter that supports many advanced topics in mathematics and board exam preparation.

What Will You Learn in Real Numbers?

The following are the main concepts you will study in this chapter:

• Understand basic concepts of real numbers and their properties

• Learn Euclid’s Division Algorithm to find HCF

• Know the relationship between HCF and LCM

• Study the Fundamental Theorem of Arithmetic

• Learn prime factorisation of numbers

• Understand decimal expansion of rational numbers (terminating & non-terminating) 

CBSE Class 10 Real Numbers Topics: Detailed Breakdown

Knowing the CBSE class 10th Maths syllabus makes preparation more focused. The following topics give a complete overview of the Real Numbers chapter.

Important Topics in Chapter 1 Real Numbers 

During revision, it is important to focus on high-weightage concepts. The following topics from the Real Numbers chapter are important for exams.

• Euclid’s Division Algorithm

• Fundamental Theorem of Arithmetic

• HCF and LCM

• Decimal expansion of rational numbers

To ensure alignment with the latest CBSE guidelines and optimise your preparation, it is recommended to review the updated list of deleted topics for Class 10 Maths and focus only on the currently prescribed syllabus. 

Also Check: Class 10 Real Numbers NCERT Solutions

How to Strengthen Your Preparation for CBSE Class 10 Maths Exams?

Strong preparation in Class 10 Maths requires a balance of concept clarity, regular practice, and consistent revision. Focusing on the right resources and practising in an exam-oriented manner can help improve both accuracy and confidence.

• Build clear concepts across all topics:
  Focus on understanding key concepts from the CBSE Class 10 Maths syllabus to solve different types of questions with confidence.

• Practise NCERT questions thoroughly:
  Solve all Class 10 Maths NCERT questions multiple times, as they form the base of board exam preparation.

• Revise formulas and identities regularly:
  Keep revising important formulas in Class 10 Maths to improve speed and reduce calculation errors.

• Solve Previous Year Questions (PYQs):
  Practising CBSE Class 10 Maths PYQs helps you understand exam patterns and frequently asked questions.

• Attempt sample papers consistently:
  Solve Class 10 Maths sample papers to improve time management and get familiar with the exam format.

• Focus on important questions:
  Practise Class 10 Maths Most Important Questions (MIQs) to cover high-weightage topics effectively.