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Abacus
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AD SPACE · 16:9
Soroban Abacus
Rods:
13
· Tap beads
Rods:
5
7
9
13
17
−
+
Upper Bead =
5
Lower Bead =
1
Active beads touch the bar
0 — Zero
Soroban Abacus
Rods:
13
· Click beads to toggle
Rods:
5
7
9
13
17
−
+
✓ Copied!