arithmetic

复数：arithmetics

1. [U]算术 branch of mathematics that deals with calculations using numbers
2. [U]计算calculations

• do arithmetic进行计算
• learn arithmetic学算术

• faulty political arithmetic错误的政治算盘
• mental arithmetic心算
• simple arithmetic简单的算术

• business arithmetic商业算术

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

1. I'm good at history but not so hot at arithmetic.
   我的历史成绩不错，但算术不太好。
2. He got the answer by mental arithmetic.
   他用心算得出了答案。
3. My job is to instruct you in arithmetic.
   我的工作就是指导你学算术。
4. I am not sure my arithmetic is correct, but I think the total is 75.
   我不确定我的计算是不是正确,但是我认为总数是75。

1. I saw him puzzle over an arithmetic problem.
   我看见他正在苦心思索一道算术题。
2. Who can solve this simple arithmetic problem?
   谁会做这道简单的算术题?