THREE R'S


Meaning of THREE R'S in English

three R’s /ˌθriː ˈɑːz $ -ˈɑːrz/ BrE AmE noun

the three R’s reading, writing, and ↑ arithmetic , considered as the basic things that children must learn in school

Longman Dictionary of Contemporary English.      Longman - Словарь современного английского языка.