Abacus - Big friends additon of 5 to 9 techniques - Part - 3.2

This video explains how to do sums of 10's complements addition of 5 to 9 techniques/fornulas
Before watching this video you have to see these videos also....
Follow the videos in sequential manner for better learning:
Part - 1.0 - • Discovering Abacus: Be...
Part - 1.1 - • Abacus Rules for Begin...
Part - 1.2 - • Mastering Abacus: Simp...
Part - 2.0 - • Mastering 5's Compleme...
Part - 2.1 - • Unlock the Secrets of ...
Part - 2.2 - • Mastering 5's Compleme...
Part - 3.0 - • Abacus - what is Big f...
Part - 3.1 - • Master 10’s Complement...
Part - 3.2 - • Abacus - Big friends a...
Part - 3.3 - • Abacus - Big friends s...
Part - 3.4 - • Abacus - Big friends s...
Part - 4.0 - • Abacus - what is Mixed...
Part - 4.1 - • Abacus - Mixed complem...
Part - 4.2 - • Abacus - Mixed complem...
Part - 4.3 - • Master All Abacus Tech...
Part - 4.4 - • Master 2 & 3-Digit Sum...
Part - 5.0 - • Master Abacus Multipli...
Part - 5.1 - • Master Abacus Multipli...