Class 9 Maths New NCERT | Chapter 1 | Number System | Exercise 1.3 | All Questions || Doubt Xpert
“Join India’s #1 Free Doubt Solving Platform – Doubt Xpert (also known as Doubt Expert) 🚀" 📘 Class 9 Maths - Number System (Exercise 1.3) Get 100% clarity on every question from Chapter 1 — solved step-by-step as per the New NCERT 2025 Syllabus. Learn easy formulas, fast tricks, and board-exam focused tips. 📌 Help Us Grow! 👍 Like the video if it helped you 🔔 Subscribe for more NCERT-based solutions 💬 Drop your doubts in the comments — we reply or make videos for them! 📤 Share with your friends who need help in Maths 📲 Need help with any doubt? Send your question as an image on Telegram/WhatsApp – get a free video/image solution from us! 🔗 *Join Us Here:* Telegram: https://t.me/Doubt_Xpert WhatsApp: +91-9643619960 Instagram: / doubtxpert Twitter: https://x.com/DoubtXpert Subscribe: / @doubtxpert 📚 Questions Covered in This Video (Exercise 1.3 – Number System): Question 1. Write the following in decimal form and say what kind of decimal expansion each has (i) 36/100 (ii) 1/11 (iii) 33/8 = 4⅛ (iv) 3/13 (v) 2/11 (vi) 329/400 Question 2. You know that 1/7 = 0.142857 underline. Can you predict what the decimal expansions of 2/7 , 13/7 , 4/7 , 5/7 , 6/7 are , without actually doing the long division? If so, how? Question 3. Express the following in the form p/q where p and q are integers and q ≠ 0. (i) 0.6¯ (ii) 0.47¯ (iii) 0.001¯ Question 4. Express 0.99999… in the form p/q. Are you surprised by your answer? With your teacher and classmates discuss why the answer makes sense. Question 5. What can the maximum number of digits be in the repeating block of digits in the decimal expansion of 1/17? Perform the division to check your answer. Question 6. Look at several examples of rational numbers in the form p/q (q ≠ 0). Where, p and q are integers with no common factors other that 1 and having terminating decimal representations (expansions). Can you guess what property q must satisfy? Question 7. Write three numbers whose decimal expansions are non-terminating non-recurring. Solution: √2 = 1.414213562 ……….. √3 = 1.732050808 ……. √5 = 2.23606797 ……. Question 8. Find three different irrational numbers between the rational numbers 5/7 and 9/11 . Question 9. Classify the following numbers as rational or irrational (i) √23 (ii) √225 (iii) 0.3796 (iv) 7.478478….. (v) 1.101001000100001……… #Class9Maths #NCERTSolutions #NumberSystem #MathsMadeEasy #Exercise1 #NCERTBooks #ExamPreparation #BoardExams #CBSEboard #DoubtXpert #DoubtExpert #NCERT2025 #FreeDoubtSolving
