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7
-4 5 4
Lesson 3: Subtraction
This Lesson demonstrates subtracting 7 from 11
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4 5 4
Lesson 3: Subtraction (11-7)
First Represent 11 as 10...
(pending operation)
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4 6 4
Lesson 3: Subtraction (11-7)
...and 1.
(This is 11)
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-3 5 4
Lesson 3: Subtraction (11-7)
We Represent -7 as -10+3, so...
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3 5 4
Lesson 3: Subtraction (11-7)
-10 ...
(pending operation +3)
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7 6 4
Lesson 3: Subtraction (11-7)
...+3 Completes The Operation
The Answer is +4.
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-7 6 4
Conclusion: (End)
To perform addition, move beads towards the
mid-beam; to subtract, move beads away from it.
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