The thinking in each chapter uses at most only elementaryarithmetic, and sometimes not even that.
每一章的思考最多只使用了初级算术，有时甚至不需要用。
2
Second, the paper defines evaluation index entropy and entropy weight, and elementaryarithmetic of multi-objective synthetic evaluation based on entropy weight is described.
定义了评价指标的熵和熵权的概念，并提出了基于熵权的多指标综合评估的基本算法。
3
Elementary schools at that time focused on basic education - reading, writing, arithmetic.