1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
|
16
-1 6 4
Lesson 2: Addition
This Lesson demonstrates 2 addition problems:
6+5 & 23+9
Press Space-bar to Begin
1 6 4
Lesson 2: Addition (6+5)
We Represent 6 by Adding 5...
(pending operation)
Press Space-bar to Continue
4 6 4
Lesson 2: Addition (6+5)
...and 1.
(This is 6)
Press Space-bar to Continue
0 6 4
Lesson 2: Addition (6+5)
Adding the 5...
(Requires a Carry)...
Press Space-bar to Continue
4 5 4
Lesson 2: Addition (6+5)
...So We Carry to the Previous Column...
(The 10's Column)
Press Space-bar to Continue
2 6 4
Lesson 2: Addition (6+5)
...We Reset The Upper-deck and Obtain The Answer.
10 in the Previous Column + 1 in the Current= 11.
Press Space-bar to Continue
3 5 4
Lesson 2: Addition
That was a Straight-forward Example...
Press Space-bar
3 6 4
Lesson 2: Addition
The following one is a bit more complicated.
So, pay attention...
Press Space-bar to Begin
5 5 4
Lesson 2: Addition (23+9)
20... (begin to represent 23)
Press Space-bar
6 6 4
Lesson 2: Addition (23+9)
...+3, represents 23.
Press Space-bar
0 6 4
Lesson 2: Addition (23+9)
Represent 9 as +10 -1. So, 2 Beads on upper-deck= 10...
(pending carry to the 10's column)
Press Space-bar
6 5 4
Lesson 2: Addition (23+9)
...carry to 10's column...
Press Space-bar
2 6 4
Lesson 2: Addition (23+9)
Reset Upper-deck of Current-column...
(Pending the `-1' of +10-1= +9)
Press Space-bar
5 6 4
Lesson 2: Addition (23+9)
... -1 (Current-column) completes +9
Resulting in the answer: 32
Press Space-bar
-5 6 4
Conclusion: (continued)
To perform addition, move beads towards the
mid-beam; to subtract, move beads away from it.
Press Space-bar
-5 6 4
Conclusion: (End)
To gain profiency in using the abacus, practice !
Press Space-bar
|
