た足taしshiざん算zan
1.
The mathematical process of combining two or more numbers to find their total, often referred to as finding the sum.
2.
A fundamental operation in arithmetic that involves adding quantities together to yield a single, cumulative amount.
3.
The technique of calculating the sum of multiple numerical values, which is essential for various mathematical computations and applications.
Example:
うちの息子はまだちゃんと足し算ができない。