Decimal Addition/Subtraction Sums Abacus Level 2( PART 5)| 5's Compliments/Small Friends

Decimal Addition/Subtraction Sums Abacus Level 2( PART 5)| 5's Compliments/Small Friends



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This video shows level 2 (Part 5) of the abacus training in which 5's compliments decimal addition and subtraction sums are explained. 5 compliments are also called small friends. Both +5 and -5 compliment method operations are shown.



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