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心算

xīn suànㄒㄧㄣ ㄙㄨㄢˋ

基本解释

心算 xīnsuàn
[mental calculation] 筹划;筹算

近义词

默算

反义词

笔算、珠算

英文翻译

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

详细解释

(1).谓筹划,筹算。《晋书·律历志下》:“虽復使 研桑 心算, 隶首 运筹……皆未能并臣如此之妙也。” 晋 潘岳 《杨荆州诔》:“多才丰艺,彊记洽闻,目睇毫末,心算无垠。”《南史·施文庆传》:“ 文庆 聪敏强记,明闲吏职,心算口占,应时条理,由是大被亲幸。”
(2).口算。即只凭脑子而不用纸笔、算盘、计算机等进行运算。


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. 我的妈妈很擅长心算,她可以在短时间内计算出复杂的数学题目。

(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. 这个学生在心算方面有很大的潜力,他能够迅速准确地计算出任何数字。

(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: 我用心算算出了这道数学题的答案。 (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: 我在数学考试中没有带计算器,所以只能依靠心算来解题。 (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: 心算是一个非常有用的技能,它可以帮助我更快地解决数学问题。 (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.)

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