Before 1989, students in the third grade of primary school had to learn, but rote learning was not required. After 1989, in order to improve students' understanding of abstract concepts, American math teachers will cancel all the parts that need to be memorized in mathematics, and the multiplication table of 99 bears the brunt of the sword. Many students have only seen it in kumon cram school, and more people didn't know it existed until they graduated from primary school. Many American educators believe that this is one of the most fundamental reasons why American students' math and physics scores are getting worse and worse.

Steve chen, the founder of Youtube and a small student studying in Taiwan Province Province, said frankly that the multiplication table memorized by Taiwan Province Province at the beginning made him lead in mathematics in the United States, and forbidding children to learn multiplication tables was the best example for Americans to draw their swords from the palace.

However, even if American children have to memorize the multiplication table of 1999, they will definitely beat China children. Chinese numerals are monosyllables from 0 to 9, while English requires more words if reciting three times and three equals nine, and there is no formula, which is difficult to remember and detours.