addition squares

例句：

1. 1. The teacher explained the concept of addition squares to the students.
   老师向学生们解释了加法平方的概念。
2. 2. The student calculated the sum of two numbers using addition squares.
   学生使用加法平方来计算两个数字的和。
3. 3. In mathematics, addition squares are used to find the sum of consecutive integers.
   在数学中，加法平方用于计算连续整数的和。