Jump to content

Using an Abacus/Addition

From Wikibooks, open books for an open world

Addition

[edit | edit source]

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)
[edit | edit source]