Mixed Complements in Abacus | Big Friends Addition & Subtraction Explained for Kids

In this video, students will learn Mixed Complements in Abacus using the Big Friends method for both addition and subtraction. This concept is essential for mastering advanced abacus calculations and improving mental maths speed.

Mixed complements combine addition and subtraction formulas using the Big Friends concept (complements of 10). This technique helps students perform calculations quickly when direct bead movement is not possible on the abacus.

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