xiǎo hái zi / xué / suàn shù / shí / zǒng shì / xiān / xué / shǔ / shù / rán hòu / zài / xué / jiā jiǎn fǎ

小孩子学算术时，总是先学数数，然后再学加减法。

When children learn arithmetic, they first learn to count, then learn addition and subtraction.