NCERT Figure it Out 6 - Multiply by base - A Story of Numbers
Question: In Egyptian (base-10), what happens when you multiply any landmark by 10? Does the same idea hold in base-5 and any base-n?
Answer: Multiplying a landmark by the base yields the next landmark. True for Egyptian, base-5, and every base-n system.
Full step-by-step NCERT solution with diagrams on Something by Zero.