Addition and Subtraction using Big Friends on Abacus | InstAbacus
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490.5K viewsJun 16, 2021
YouTubeInstAbacus
Master -5 abacus calculation using the Bad Big Friends formula 🧮 We use the index finger for clean, accurate movement. This formula helps students: ✔️ Calculate faster ✔️ Build correct fingering habits ✔️ Strengthen mental visualization Small technique, big difference ✨ Follow @myabacusfun for daily abacus & mental arithmetic training . . #AbacusFormula #BadBigFriends #MentalArithmetic #AbacusTraining #MathSkillsForKids | Abacus Fun
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