7.5.1 - Modular Addition, Subtraction and Multiplication
Enroll to start learning
You’ve not yet enrolled in this course. Please enroll for free to listen to audio lessons, classroom podcasts and take practice test.
Practice Questions
Test your understanding with targeted questions
What is 8 mod 5?
💡 Hint: Think about how many times 5 fits into 8.
Is -4 mod 3 equal to 2 or 0?
💡 Hint: When calculating negative mod, visualize moving in the opposite direction.
4 more questions available
Interactive Quizzes
Quick quizzes to reinforce your learning
What is 10 mod 3?
💡 Hint: Subtract multiples of 3 from 10.
True or False: Division is well-defined in modular arithmetic.
💡 Hint: Consider cases where division produces a fraction.
1 more question available
Challenge Problems
Push your limits with advanced challenges
Calculate (15 * 19) mod 7 using properties of modular arithmetic.
💡 Hint: Reduce each number first!
Using the square and multiply method, compute (4^12) mod 11.
💡 Hint: Square and reduce at each step.
Get performance evaluation
Reference links
Supplementary resources to enhance your learning experience.