DepLearnLEARN BRIGHTER

Now on Google PlayCBSE Class 9 & 10

Stuck on a question? Get hints in your own language.

NCERT-aligned daily practice for Class 9 and 10, with step-by-step hints in 14 Indian languages, a built-in scratchpad and a boss challenge to finish every chapter.

GET IT ONGoogle Play
See how it works

Free to downloadFollows the NCERT books

168
chapters
5,800+
practice questions
14
Indian languages
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Class 10 MathematicsCh 1: Real Numbers

If HCF(a, b) = 12 and the product of the two numbers is a × b = 1,800, what is the LCM(a, b)?

NCERT-aligned practice • Step-by-step hintsExplore practice in the DepLearn app

How you improve

Every mistake becomes the next thing you learn

Follow the path DepLearn is built around: practise, slip up, understand why, come back to it, and finish the chapter strong.

  1. Start here

  2. Step 1 of 5

    Practice

    Short levels you can finish in a few minutes, six in every chapter.

  3. Step 2 of 5

    Make mistakes

    A wrong answer is part of learning. Every question you miss goes into your Mistake Bank.

  4. Step 3 of 5

    Understand mistakes

    Ask Aura for a step-by-step hint in your language and work it out on the scratchpad.

  5. Step 4 of 5

    Revise

    Open your Mistake Bank and go back over those questions, not only before exams.

  6. Step 5 of 5

    Master

    Finish the chapter with a 10-question boss challenge, so you know you have really learned it.

  7. Then repeat with the next chapter
Structured Learning Flow

A simple flow from setup to review

Set a goal, choose a topic, practice, and revisit questions that need more work.

Step 1 · Setup

Set your class, language and goal

Choose a class, a supported language, and a daily practice goal that fits your routine.

  • Choose Class 9 or Class 10
  • Set a daily question goal

Made for everyday study

A focused practice routine, with help when you need it

Practice by topic, get a hint when you’re stuck, then come back to questions that need another look.

Practice by chapter

Six levels in every chapter, from easy questions up to a 10-question boss challenge.

Get guided AI hints

Ask Aura for step-by-step help when a question feels difficult.

Work it out on screen

Use the in-quiz scratchpad for calculations, rough work, and diagrams.

Return to mistakes

Review questions you missed and revisit them as part of your practice.

Language supportExplore all 14 available languages
  • English
  • Hinglish
  • Hindi
  • Bengali
  • Marathi
  • Telugu
  • Tamil
  • Gujarati
  • Urdu
  • Kannada
  • Odia
  • Malayalam
  • Punjabi
  • Assamese

Language availability can vary by app feature and content.

Practice rewards

QuizCoins are in-app points

Earn them through eligible activities, including inviting friends. They have no cash value, cannot be withdrawn and are separate from Pro pricing.

Inside the app

Everything in one place

Practice is the core. Around it sit the tools students use to revise, track progress and stay consistent.

  • Aura Notes Studio

    AI revision notes, summaries and mind maps for the chapter you are on.

  • Smart flashcards

    Active recall with spaced repetition, and audio so you can revise on the go.

  • Mistake Bank

    Every question you miss is collected automatically, ready for targeted practice.

  • Formula sheets

    Maths theorems and Science reactions in one place, easy to revise before a test.

  • 5-minute Rapid Sprint

    Fast, timed drills for the days you only have a few minutes.

  • Custom quiz builder

    Pick the chapters, difficulty and number of questions to build your own quiz.

  • Progress and board readiness

    Streaks, a subject-balance view and an idea of how ready you are for the CBSE boards.

  • Leaderboards and contests

    Daily, weekly and all-time rankings, plus timed challenge rounds.

  • Streaks and reminders

    A daily reminder at the time you choose, and streaks that reward showing up.

  • History and bookmarks

    Look back at past quizzes and keep the questions you starred.

  • Refer and earn

    Share your code. When a friend joins and practises, you both earn QuizCoins.

  • Aura AI doubts

    Ask a follow-up in your own language and get a step-by-step explanation.

From early users

What early users say

  • “I like how the app turns studying into quizzes. Doing a few questions every day feels easy, not boring.”
    AyazEarly user
  • “Learning through quizzes every day makes it fun. I practise a little each day and it has become a habit.”
    SaifEarly user
  • “I really like this app. Answering quiz questions every day is a nice way to learn.”
    OmEarly user

Syllabus

Chapters you can practise

CBSE Class 9 and 10, chapter by chapter. This list is the same one the app uses.

Class 9 follows the 2026-27 NCERT books, and Mathematics also keeps three extra-practice chapters (marked). Every chapter below has six levels, and the sixth is a 10-question boss challenge.

Class 9 Mathematics

15 chapters · all in the app

  1. Number System
  2. Introduction to Polynomials
  3. Sequences and Progressions
  4. Exploring Algebraic Identities
  5. Linear Equations in Two Variables
  6. Coordinate Geometry
  7. Introduction to Euclid’s Geometry: Axioms and PostulatesExtra practice
  8. Lines and AnglesExtra practice
  9. Triangles – Congruence TheoremsExtra practice
  10. 4-gons (Quadrilaterals)
  11. Circles
  12. Area and Perimeter
  13. Surface Area and Volume
  14. Statistics
  15. Introduction to Probability

Extra practice: this chapter is not in the 2026-27 NCERT Mathematics book (Ganita Manjari). It is kept for revision of earlier topics.

When you’re ready for more

Pro passes from about ₹83 a month

Pick a 30, 90 or 365-day pass. Prices are shown before GST; checkout itemizes 18% GST and any valid discount.

  • ₹199 · 30 days
  • ₹499 · 90 days
  • ₹999 · 365 days (about ₹83 a month)
View pricing

Free study guides

Plan your CBSE year, in English and Hindi

All guides

About DepLearn

Daily practice that fits into a school day

DepLearn is a practice app for CBSE Class 9 and 10 students. It turns each chapter into short levels, so a few minutes of practice on most days adds up.

Short, regular practice

Every chapter has six levels. Levels 1 to 5 are five questions each, and level 6 is a 10-question boss challenge. Step-by-step hints and an on-screen scratchpad help when you get stuck.

14 languages

Aura, the AI helper, can explain in English, Hinglish, Hindi and 11 other Indian languages. Language availability can vary by screen and content.

CBSE first

We are starting with CBSE Classes 9 and 10. ICSE and state boards are planned for later, with no dates yet.

Privacy-minded

No targeted advertising. Parents can ask to review or delete a child’s learning records. Details are in our privacy policy.

Studying under ICSE or a state board?

DepLearn covers CBSE Class 9 and 10 today. Write to us with your board and class, and we will tell you if and when it is available.

Tell us your board

Irshad Ahmad

Founder, DepLearn

LinkedIn

A note from the founder

Why we are building DepLearn

Hi, I’m Irshad. DepLearn is built around one idea: when you get stuck on a question, you should get a hint that walks you through it step by step, in the language you think in, and not just a red “wrong”.

So every chapter is split into short levels you can finish in a few minutes, there is a scratchpad to work things out, and a boss challenge closes each chapter so you know you have really learned it.

DepLearn is on Google Play now. Try it, then tell us what you would like to see: your feedback shapes what we build next. You can write to us at support@deplearn.com.

GET IT ONGoogle Play

For students and families

Clear details before you begin

DepLearn is for CBSE Classes 9 and 10. Review privacy and account options, or email us at support@deplearn.com.

Frequently asked questions

Helpful details for families

Which classes and subjects are covered?
CBSE Class 9 and 10: Mathematics, Science, Social Science, English, Hindi and Computer Applications. Every chapter has six levels, ending in a 10-question boss challenge. The syllabus section lists every chapter.
Where can I get the app, and is it free?
DepLearn is on Google Play for Android and is free to download. Pro passes are optional and are bought inside the app.
What else is in the app besides practice questions?
Aura Notes (AI revision notes and mind maps), smart flashcards, a Mistake Bank, formula sheets, a 5-minute Rapid Sprint, a custom quiz builder, progress and board-readiness views, leaderboards and contests, streaks with reminders, quiz history and bookmarks, and Refer & Earn.
What does Aura AI do?
Aura provides step-by-step hints to help students work through questions. AI responses can be imperfect, so students should check important details against their textbook or teacher.
Which languages are available?
The app supports English and 13 Indian languages for the language features described in the app. Availability can vary by screen and content.
What does a Pro pass cost?
The pricing page lists active pass durations and prices. Prices shown are before GST; checkout itemizes 18% GST and any valid discount before payment. See pricing.
What are QuizCoins, and can they be withdrawn?
QuizCoins are in-app points earned through eligible activities, including inviting friends. They can be spent inside the app. They are not rupee prices, cannot be withdrawn or exchanged for cash, and are separate from paid checkout.
How does Refer & Earn work?
Every student gets a personal code and share link. When a friend joins with it and starts practising, you both earn QuizCoins, with more for you as your friend keeps learning or becomes a paid Pro student. Rewards are in-app QuizCoins only. Using several accounts on one phone, or your own code, earns nothing.
How can I review privacy or request deletion?
Read the Privacy Policy and use the account deletion instructions on the Data Deletion page, or contact support if you need help. Privacy Policy and Data Deletion.

Still have a question? Email us at support@deplearn.com.

Free on Google Play · CBSE Classes 9 & 10

Start practising today

DepLearn is on Google Play for Android. Download it free, pick your class and start with one short level. Pro passes are optional and bought in the app.

GET IT ONGoogle Play
 Explore syllabus