Written by July 8, 2025
Abacus Math Program – Lesson 5 – Ten Pair Complement Addition
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In lesson 5, we will introduce the concept of 10 pair complements or 10 pairs. If you are new to abacus math, we suggest that you start from lesson 1. This abacus math lesson will use the 10 pair complement method for addition but as we will see in a later lesson the 10 pair complements are also