Fastest way to multiply by five

The video tutorial introduces the Tranberg speed system for basic mathematics, focusing on a systematic method for multiplying numbers by 5. The rule involves taking half of the neighbor number and adding five if the neighbor is odd. The tutorial provides step-by-step examples to illustrate the method, emphasizing the importance of practice for mastery. The system aims to simplify multiplication without relying on memorizing times tables.

Describe how to round down decimals when using the Tranberg system.

How does the Tranberg system simplify multiplication compared to traditional methods?

What is the process for multiplying an even number by 5 using the Tranberg system?