Real Numbers Class 10 | Quick Revision in 13 Minutes | CBSE 2026-27 | Guidepoint Academy

Revise the complete Class 10 Maths Chapter 1 – Real Numbers in just 13 minutes, as per the latest CBSE syllabus 2026-27. Step-by-step whiteboard explanations of every concept, the most frequent board question types, proofs written exactly the way examiners expect, and a quick quiz at the end. In this video: ✅ Fundamental Theorem of Arithmetic (with factor tree) ✅ HCF & LCM by prime factorisation + HCF × LCM = a × b ✅ Board favourites: Can 6ⁿ end with 0? Composite numbers, HCF/LCM word problems, prime-power MCQs ✅ Proofs: √2, √3, √5 and 3 + 2√5 are irrational ✅ Rational vs irrational rules, common mistakes & quick quiz ⏱️ Chapters 0:00 Introduction 0:17 What we'll revise (syllabus 2026-27) 0:48 The real number family: rational & irrational 1:17 Prime vs composite numbers 1:43 Fundamental Theorem of Arithmetic + factor tree 2:35 HCF & LCM by prime factorisation 3:25 HCF × LCM = product of two numbers 4:19 Exam type 1: Can 6ⁿ end with 0? 5:02 Exam type 2: Show a number is composite 5:35 Exam type 3: HCF or LCM word problems 6:50 Exam type 4: HCF & LCM with letters 7:31 Irrational numbers: the key theorem 8:08 Proof: √2 is irrational 8:57 Proof: 3 + 2√5 is irrational 9:37 Rational & irrational: quick rules 10:15 Mistakes to avoid 10:40 Quick quiz (4 questions) 12:12 Summary & contact 📌 Note: Euclid's division lemma and decimal expansions are not part of the 2026-27 CBSE syllabus. 🏫 Guidepoint Academy – coaching for Grades 8–12 (Maths, Science, Commerce) 📍 Office No. 203, Omran Tower, Al Qasimia, Sharjah, UAE 📞 Call / WhatsApp: 056 690 0311 | 050 512 2641 👍 Like, share with your friends and subscribe for more quick revision videos! #RealNumbers #Class10Maths #CBSE2027 #CBSEClass10 #BoardExam #GuidepointAcademy #Sharjah