arithmetic

...teaching the basics of reading, writing and arithmetic..…教授读、写、算的基本知识。

arithmetic mean,算术均数；等差中项

arithmetic average,算术平均数

arithmetic operation,算术运算

mental arithmetic,心算

arithmetic expression,算术表达式

arithmetic unit,运算器；运算部件

theoretical arithmetic,理论计算

arithmetic logic unit,算术逻辑单元

arithmetic progression,等差级数，等差数列；算术级数，算术数列