This tool offers abacus students the opportunity to fine-tune their skills and test the limits of their abilities. There are descriptions of how to use an abacus and the movements targeted by this tool. For kids who are new to abacus, it is advised that they first work through the Learn to Add and Subtract on the Abacus Course. To get started with the custom abacus math tool, just choose the technique and how many digits and numbers per question.
Numbers Per Question:
Digits Per Number: