Abacusjp3_1.les 1.45 KB
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Lesson 3.1: Addition
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This Lesson demonstrates 2 addition problems:
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6+5 & 23+9
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Lesson 3.1: Addition (6+5)
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We Represent 6 by Adding 5...
(pending operation)
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Lesson 3.1: Addition (6+5)
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...and 1.
(This is 6)
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Lesson 3.1: Addition (6+5)
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Adding the 5 so We Carry to the Previous Column...
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(The ten's Column)
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Lesson 3.1: Addition (6+5)
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...We Reset The Upper-deck and Obtain The Answer.
10 in the Previous Column + 1 in the Current= 11.
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Lesson 3.1: Addition
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That was a Straight-forward Example...

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Lesson 3.1: Addition
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The following one is a bit more complicated.
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So, pay attention...
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Lesson 3.1: Addition (23+9)
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20... (begin to represent 23)

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Lesson 3.1: Addition (23+9)
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...+3, represents 23.

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Lesson 3.1: Addition (23+9)
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Represent 9 as +10 -1.
So, 1 Beads on previous  column= 10...
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Lesson 3.1: Addition (23+9)
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... -1 (Current-column) completes +9
Resulting in the answer: 32
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Conclusion: (continued)
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To perform addition, move beads towards the
position-beam; to subtract, move beads away from it.
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Conclusion: (End)
To gain proficiency in using the abacus, practice !

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