Learning up to 12x12 is commonplace in the U.S., and apparently in other English-speaking countries, too https://en.wikipedia.org/wiki/Multiplication_table#Mod

Learning up to 12x12 is commonplace in the U.S., and apparently in other English-speaking countries, too https://en.wikipedia.org/wiki/Multiplication_table#Modern_times https://en.wikipedia.org/wiki/Multiplication_table#Modern_ti...