Abacus || English || Lesson 6 Ex: (123 + 345 + 567 + 789) || All Addition Formulas

In this video I have demonstrated the addition of the four 3-digit numbers, covering all digits from 1 to 9. While doing this addition, we need to use all kinds of formulas on different rods, depending on the situations.

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Видео Abacus || English || Lesson 6 Ex: (123 + 345 + 567 + 789) || All Addition Formulas канала AnkMitra Abacus & Maths by Mandar Sherbet