1. What is the basic principle of decimal addition using an abacus? | ![]() |
2. How do you perform subtraction using an abacus without complements? | ![]() |
3. Can you explain how to handle carrying in decimal addition on an abacus? | ![]() |
4. What are the benefits of using an abacus for learning decimal addition and subtraction? | ![]() |
5. How can I practice decimal addition and subtraction sums using an abacus effectively? | ![]() |