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
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. 2012