珠算

1. Origins, structure, and basic meaning

• Structure: 珠算, read しゅざん, means calculation using the beads of an abacus.
• Basic usage: It is used when talking about attending abacus classes or having learned abacus calculation.
  • 小学生の頃、珠算教室に通っていた。

2. Common pitfalls and similar expressions

• The tool and the calculation method
  • そろばん is the calculating tool, while 珠算 is the method of calculating with it. 暗算 refers to calculating mentally.