Class 9 · Mathematics · New NCERT
Chapter 11: The World of Algorithms
Chapter 11 introduces algorithms as precise step-by-step procedures. Starting with the digit-by-digit addition algorithm, it develops algorithms for the greatest common divisor, from listing divisors to Euclid's subtraction algorithm and Aryabhata's division algorithm, and discusses correctness, efficiency and simple data structures such as lists.
Topics covered
- What is an algorithm
- Adding numbers digit by digit
- Computing divisors and the greatest common divisor
- Lists as data structures
- Euclid's subtraction algorithm
- Aryabhata's division algorithm
- Efficiency of algorithms