Class 9 Maths · Chapter 11 · CBSE / NCERT
The World of Algorithms
Algorithms: exact step-by-step methods. You’ll learn why column addition works, find all the divisors of a number, and compute the gcd with Euclid’s and Aryabhata’s methods.
10 short lessons · about 40 minutes in all
What you’ll learn
- 1What an algorithm really is4 min
- 2Adding digit by digit4 min
- 3Counting versus the column method4 min
- 4Lists and named values4 min
- 5Finding all the divisors of a number4 min
- 6The gcd from two lists of divisors4 min
- 7Making the gcd scan faster4 min
- 8Euclid's subtraction algorithm4 min
- 9Aryabhata's division shortcut4 min
- 10Algorithms for primes and factorisations4 min
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What an algorithm really is · about 4 minutes
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More Class 9 Maths
The other 13 chapters.
CH 1Orienting Yourself: The Use of Coordinates8 lessonsCH 2Introduction to Linear Polynomials9 lessonsCH 3The World of Numbers10 lessonsCH 4Exploring Algebraic Identities9 lessonsCH 5I’m Up and Down, and Round and Round10 lessonsCH 6Measuring Space: Perimeter and Area10 lessonsCH 7The Mathematics of Maybe: Introduction to Probability9 lessonsCH 8Predicting What Comes Next: Exploring Sequences and Progressions9 lessonsCH 9Propositions and their Converses12 lessonsCH 10How Quantities Combine: Understanding Data10 lessonsCH 12Quadrilaterals11 lessonsCH 13Two Variables, One Line12 lessonsCH 14Math of Space: Surface Area and Volume10 lessons
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