基本解釋

◎ 心算 xīnsuàn
[mental calculation] 籌劃;籌算

近義詞

默算

反義詞

筆算、珠算

英文翻譯

1.mental arithmetic; doing sums in one's head

詳細解釋

(1).謂籌劃，籌算。《晉書·律歷志下》：“雖復使 研桑 心算， 隸首 運籌……皆未能并臣如此之妙也。” 晉 潘岳 《楊荊州誄》：“多才豐藝，彊記洽聞，目睇毫末，心算無垠。”《南史·施文慶傳》：“ 文慶 聰敏強記，明閑吏職，心算口占，應時條理，由是大被親幸。”
(2).口算。即只憑腦子而不用紙筆、算盤、計算機等進行運算。

心算（xīn suàn）

Pronunciation: /xin suan/

Basic Meaning: Mental calculation

Detailed Explanation: 心算 refers to the ability to perform calculations mentally, without the use of external tools such as calculators or pen and paper. It involves using one's mind to perform arithmetic operations and solve mathematical problems. 心算 is often seen as a skill that demonstrates quick thinking and mental agility.

Usage Scenarios: 心算 is commonly used in daily life, especially in situations where quick calculations are required. For example, when shopping, budgeting, or splitting bills, one can use 心算 to quickly calculate the costs or the amount of money owed. In academic settings, 心算 is often used in math competitions or exams where the use of calculators is not allowed.

Story Origin: The origin of the idiom 心算 can be traced back to ancient China. In ancient times, calculators or other calculating tools were not available, so people had to rely on their mental abilities to perform calculations. The idiom reflects the importance of mental calculation skills in traditional Chinese society.

Structure of the Idiom: The idiom 心算 consists of two characters: 心 (xīn) meaning "heart" or "mind," and 算 (suàn) meaning "calculate" or "count." The combination of these two characters forms the compound word 心算, which specifically refers to mental calculation.

Example Sentences:

1. 我的媽媽很擅長心算，她可以在短時間內計算出復雜的數學題目。

(Wǒ de māmā hěn shàncháng xīn suàn, tā kěyǐ zài duǎn shíjiān nèi jìsuàn chū fùzá de shùxué tímù.)

(My mother is very good at mental calculation. She can solve complex math problems in a short amount of time.)

2. 這個學生在心算方面有很大的潛力，他能夠迅速準確地計算出任何數字。

(Zhège xuéshēng zài xīn suàn fāngmiàn yǒu hěn dà de qiánlì, tā nénggòu xùnsù zhǔnquè de jìsuàn chū rènhé shùzì.)

(This student has great potential in mental calculation. He can quickly and accurately calculate any number.)

Memory Techniques:

1. Practice mental calculation regularly by challenging yourself with simple arithmetic problems. Gradually increase the difficulty level to improve your skills.

2. Use visualizations or mental images to help you remember numbers and calculations. For example, you can associate numbers with objects or create mental images of calculations taking place.

3. Break down complex calculations into simpler steps. This can make mental calculation more manageable and less overwhelming.

Extended Learning:

1. Explore different mental calculation techniques, such as Vedic mathematics or abacus calculations, to further enhance your mental calculation skills.

2. Read books or articles on the history and development of mental calculation in different cultures. Compare and contrast the techniques used in different countries.

Example Sentences from Students of Different Age Groups:

- Elementary school student: 我用心算算出了這道數學題的答案。 (Wǒ yòng xīn suàn suàn chū le zhè dào shùxué tí de dá'àn.) (I used mental calculation to figure out the answer to this math problem.)

- Middle school student: 我在數學考試中沒有帶計算器，所以只能依靠心算來解題。 (Wǒ zài shùxué kǎoshì zhōng méiyǒu dài jìsuànqì, suǒyǐ zhǐ néng yīkào xīn suàn lái jiě tí.) (I didn't bring a calculator to the math exam, so I had to rely on mental calculation to solve the problems.)

- High school student: 心算是一個非常有用的技能，它可以幫助我更快地解決數學問題。 (Xīn suàn shì yīgè fēicháng yǒuyòng de jìnéng, tā kěyǐ bāngzhù wǒ gèng kuài de jiějué shùxué wèntí.) (Mental calculation is a very useful skill as it helps me solve math problems more quickly.)