Using an Abacus/Addition
Addition edit
Addition is thought to be the easiest function the abacus can calculate. To add, the user must display the original number and add the desired number of beads to the original number.
Example: (6+5)
6=6 0000-|-0 (0) 000-0|0- (6) 6+5=11 000-0|-0 (1) 000-0|-0 (1)
External links edit
- Addition on a Japanese abacus selected from Abacus: Mystery of the Bead