Lesson 1.5, Part 1
I have previously posted about this topic (here and here), however I believe those posts may have been too long for most people’s liking. So what I’ve done now, is split this Lesson up into 6 smaller parts each with more practice problems so you can make sure you understand the material.
Urdhva-tiryagbhyam sutra
This sutra, as the title of this post suggests, translates to “Vertically and Crosswise”. This sutra is one of the best known of the Vedic Sutras, and has found many applications. In fact, as I mentioned in my first post on this topic, there is a whole book dedicated to this sutra. I highly recommend you check it out!
So what will we be using this sutra for?
We’ll be using this sutra to multiply two numbers together. I’ll begin by demonstrating two-digit multiplication, then move on to three-digit multiplication. By the time you’ve seen three-digit multiplication, you should be able to recognize the pattern and from there be able to extend it to multiplying any number of digits including uneven digits (for example….two-digit by three-digit, etc.). And finally, I’ll show you the algebraic proof so that you can understand WHY this works.
Other Parts of Lesson 1.5:
Part 2 – Two-Digit Multiplication
Part 3 – Three-Digit Multiplication
Part 4 – Extending to any number of Digits
Part 5 – Algebraic Multiplication
Part 6 – Extra Problems
