Abacus Addition: Introduction
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To add numbers, upper or lower beads are moved towards the bar.
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Thumb finger is used to move lower beads towards the bar.
- Index finger is used to move upper bead towards the bar.
Let's calculate (1 + 2) on Abacus
| Add One (+1) |
Add Two (+2) |
Equals Three (3) |
|---|---|---|
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| Figure (A) |
Figure (B) |
Figure (C) |
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As shown in figure (A); add one '1' on units rod of abacus, by moving one lower bead towards the bar.
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As shown in figure (B); add two '2' on units rod of abacus, by moving two lower beads together at a time, towards the bar.
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As shown in figure (C); Now, count value of the beads that are near and touching the bar it is three '3'.
Let's calculate (3 + 1) on Abacus
| Add Three (+3) |
Add One (+1) |
Equals Four (4) |
|---|---|---|
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| Figure (A) |
Figure (B) |
Figure (C) |
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As shown in figure (A); add three '3' on units rod of abacus, by moving three lower bead together at a time, towards the bar.
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As shown in figure (B); add one '1' on units rod of abacus, by moving one lower beads towards the bar.
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As shown in figure (C); Now, count value of the beads that are near and touching the bar it is three '4'.
Let's calculate (6 + 2) on Abacus
| Add Six (+ 6) |
Add Two (+ 2) | Equals Eight (8) |
|---|---|---|
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| Figure (A) |
Figure (B) |
Figure (C) |
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As shown in figure (A); add six '6' on units rod of abacus, by moving one lower bead and five bead with pinch together at a time, towards the bar.
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As shown in figure (B); add two '2' on units rod of abacus, by moving two lower beads together at a time, towards the bar.
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As shown in figure (C); Now, count value of the beads that are near and touching the bar it is eight '8'.