# Arithmetic – Grade 10 CBSE

As per CBSE syllabus, the only chapter under this topic is Number System.

Key topics include:

• Types of Real Numbers
• Real Numbers
• Natural Numbers
• Whole Numbers
• Integers
• Prime Numbers
• Composite Numbers
• Euclid Division Lemma
• Lemma
• Algorithm
• Euclid’s Division Lemma
• Euclid Division Algorithm
• Theorem
• To Find HCF of Two Numbers Using Euclid’s Division Lemma
• To Express HCF as Linear Combination
• Fundamental Theorem of Arithmetic
• Definition
• LCM of Two Numbers
• HCF of two Numbers
• How to Find LCM & HCF of Two Numbers
• Properties of LCM & HCF of Two Numbers
• LCM & HCF of Two Fractions
• Rational Number (Revision)
• Rational Number
• Rational Number in Decimal Form
• Terminating & Non-Terminating Rational Numbers
• Irrational Numbers (Revision)
• Irrational Numbers
• Properties of Irrational Numbers
• Basic Theorem on Irrational Numbers
• Surds
• Conjugate Surds
• Properties of Surds
• Theorems on Irrational Numbers
• Theorem 1 