arithmetic
arithmetic — 名詞
1. the area of mathematics in which you work with whole numbers using the four basi
算術
處理整數加減乘除的數學分支
the area of mathematics in which you work with whole numbers using the four basic operations: adding, taking away, multiplying, and dividing.
Mr. Lin teaches arithmetic to first-grade students every Tuesday morning.
林老師每週二早上教一年級學生算術。
school subject context: teach arithmetic
Before learning algebra, children spend several years on basic arithmetic.
在學代數之前，孩子們會花好幾年學基本算術。
uncountable: no article needed
Ms. Park drilled her third-graders on arithmetic with flashcards every Friday afternoon.
朴老師每週五下午都用閃卡帶她的三年級學生練算術。
Sofia struggled with arithmetic in primary school but later loved geometry.
蘇菲亞小學時很怕算術，但後來愛上了幾何。
The textbook covers arithmetic, fractions, and simple word problems.
這本教科書涵蓋算術、分數和簡單的應用題。
- mathematics
broader; includes algebra, geometry, and more
- math
informal American shortening of mathematics
- maths
informal British shortening of mathematics
文法句型
uncountable noun
用法筆記
Distinguish from sense 2: this sense names the school subject or branch of math itself; sense 2 names the act of calculating.
常見錯誤
2. the act of working out an answer with numbers — for example, adding up a bill or
計算；運算
用數字算出答案的動作
the act of working out an answer with numbers — for example, adding up a bill or checking that two columns of figures match.
A quick bit of arithmetic showed Rohan the trip would cost over 8000 dollars.
瑪雅稍微算了一下，發現這趟旅行要花超過八千美元。
result of calculation reveals a fact
The waiter's arithmetic was wrong, so we paid five dollars too much.
服務生算錯了，所以我們多付了五美元。
possessive: someone's arithmetic = their calculation
I'm terrible at arithmetic, so I always use my phone at the supermarket.
我計算很差，所以在超市時都用手機。
Diego did the arithmetic in his head and counted out exact change for the bus driver.
迪亞哥在腦中算了一下，數出剛好的零錢遞給公車司機。
- calculation
more formal; often used in technical or financial contexts
- sums
informal British; usually plural
- computation
formal; suggests longer or more complex working
文法句型
uncountable noun
用法筆記
Often appears with 'do', 'a bit of', or possessives ('your arithmetic'). Distinguish from sense 1: here arithmetic refers to the calculation itself, not the school subject.