算数

wǒ xiǎng wǒ de huà réng jiù suàn shù

我想我的话仍旧算数。

I think my words still stand.

tā men shuō huà cóng lái shì suàn shù de

他们说话从来是算数的。

They always keep to their words.

wǒ bù shì nà zhǒng shuō huà bù suàn shù de rén

我不是那种说话不算数的人。

I am not the sort of man who would go back on my word.

xué huì le cái suàn shù

学会了才算数

until one has mastered a skill

nǔ lì gōng zuò zhí dào wèn tí jiě jué cái suàn shù

努力工作，直到问题解决才算数。

Work hard until all the questions are finished.

wǒ men yào bǎ zhè ge xiàng mù zuò wán cái suàn shù

我们要把这个项目做完才算数。

We have to finish this project.

tā qī suì cái xué huì suàn shù

她七岁才学会算数。

She learned to count at seven.

suàn shù huó dòng

算数活动

arithmetic activities

tā de suàn shù néng lì hěn qiáng

她的算数能力很强。

She is very good at arithmetic.