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Lesson 1.1: Counting from 1 to 20 for Russian Abacus
The beads will move at each step with an
appropriate explanation in this window.
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Lesson 1.1: Counting
1

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0 0 0 1 4
Lesson 1.1: Counting
2

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0 0 0 1 4
Lesson 1.1: Counting
3

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0 0 0 1 4
Lesson 1.1: Counting
4

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0 0 0 1 4
Lesson 1.1: Counting
5

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0 0 0 1 4
Lesson 1.1: Counting
6

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0 0 0 1 4
Lesson 1.1: Counting
7

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0 0 0 1 4
Lesson 1.1: Counting
8

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0 0 0 1 4
Lesson 1.1: Counting
9

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0 0 0 1 4
Lesson 1.1: Counting
10
(pending operation)
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0 0 1 1 4
Lesson 1.1: Counting
10 (pending operation)
Carry-over...
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0 0 0 -10 4
Lesson 1.1: Counting
10
...Reset deck
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0 0 0 0 4
Lesson 1.1: Counting
Counting to 10 uses the addition
of the extra carry to the Previous Column
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0 0 0 1 4
Lesson 1.1: Counting
11

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0 0 0 1 4
Lesson 1.1: Counting
12

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0 0 0 1 4
Lesson 1.1: Counting
13

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0 0 0 1 4
Lesson 1.1: Counting
14

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0 0 0 1 4
Lesson 1.1: Counting
15

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0 0 0 1 4
Lesson 1.1: Counting
16

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0 0 0 1 4
Lesson 1.1: Counting
17

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0 0 0 1 4
Lesson 1.1: Counting
18

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0 0 0 1 4
Lesson 1.1: Counting
19

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0 0 0 1 4
Lesson 1.1: Counting
20 (pending operation)

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0 0 1 1 4
Lesson 1.1: Counting
20 (pending operation)
...Reset...
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0 0 0 -10 4
Lesson 1.1: Counting
20 (pending operation)
...Carry-over To The Previous Column.
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0 0 1 -2 4
Lesson 1.1: End
And now, some conclusions...

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Conclusion:
Each of the 10 beads on the deck has a value of 1.

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Conclusion: (continued)
Counting 10 beads on the deck requires a carry of
1 bead to the deck of the previous column.
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Conclusion: (continued)
Every column to the left of one's column is an
order of magnitude greater.
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Conclusion: (End)
Columns to the right of the one's column are used
for calculations involving decimals.
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