Addition and Subtraction using Big Friends on Abacus | InstAbacus

Learn the big friends formula for addition and Subtraction using abacus.
It is explained in detail in this video. Watch it till the end for proper understanding.

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Subtraction using Big Friends on Abacus

Small Friends on Abacus

Addition using Small Friends

Subtraction using Small Friends

Abacus Masterclass - Level I

Abacus Masterclass - Beginner Level

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Addition using Big Friends on Abacus free printable Abacus practice worksheet

Subtraction using Big Friends on Abacus free printable Abacus practice worksheet

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[VS-niue]

I was trying to teach my daughter abacus. Somehow i found all others hard, but urs is very easy to learn & then to teach my kid. Thank u.

[thusharasudhakaran]

Explanation is good, pls do the bead movements with pencil or some Pointer., Little tough to make out...

[NhatBui]

Can abacus calculate for example 55x23, teacher?

[keithjohnson]

I was wondering if you can answer this question, how would you add 99+1 on the Abacus? Going from left to right I can't figure it out but if I do it from right to left I can get it. I was taught to do it from left to right.

[mohangupta]

Can you post a video where is combination of big and small friends addition both of them are using and the formula is +9=+4-5+10 and +8=+3-5+10 and +7=+2-5+10 and +6=+1-5+10please can you post now