Start
Basic abacus
Japanese abacus
Chinese abacus
Chinese abacus
12 − 7
The abacus javascript code is based on the
source code
of
Thorsten Thormaehlen
eMathtimes
Mission & vision
Values
Legal advise
Privacy policy
Terms of use
Support
Costumer's service
Contact us
Getting started
exercises
Addition
one figure
more figures
Substraction
one figure
more figures
Multiplication
one figure
more figures
Division
one figure
more figures
