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Key ideas, worked examples and practice for every chapter.
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Summu
A patient maths teacher in every pocket.
Summu Miss teaches the Tamil Nadu State Board Class 9 maths syllabus. Students ask doubts by voice or photo and get clear, step-by-step answers in English, Tamil or Tanglish.
SSummu Miss
Ch 2 · Real NumbersHCF of 12 and 18?
12 = 2²×3, 18 = 2×3². Common: 2×3, so HCF = 6 ✓
√2 rational-ஆ?
இல்லை! √2 is irrational.
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Features
Everything Summu does for you.
Ask by voice
Speak the doubt in English or Tamil; Summu listens.
Photo of a sum
Snap the textbook sum and get the full working.
Three ways to talk
Answers in English, Tamil or Tanglish, as the student likes.
Read aloud
Every answer can be heard, great for revision.
Checked practice
New practice questions are solved twice before they are shown.
How it works
Four simple steps.
Pick a chapter
Choose from all 9 Class 9 chapters.
Ask a doubt
Type, speak or take a photo.
Get the steps
A clear answer, one step at a time.
Practise
Fresh questions to test yourself.
Made for
Who it's for
Class 9 studentsParentsTuition centresSchools
Questions
Good to know
Does it need internet?
Lessons and practice work offline. Chatting with Summu Miss needs internet.
Which syllabus does it follow?
Tamil Nadu State Board (Samacheer Kalvi), Class 9 Mathematics.
Can schools get their own version?
Yes. We can build a version with your school name, other classes and subjects.
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