The multiplication formula of 2 has two sentences: one two gets two, and two two gets four.
The multiplication formula of 3 has three sentences: one three gets three, two three gets six, and three three gets nine.
The multiplication formula of 4 has four sentences: 14 gets 4, 24 gets 8, 3412,446.
The multiplication formula of 5 has five sentences: 15 gets 5,2510,3515,4520,5525.
The multiplication formula of 6 has six sentences: 16 gets 6,262,368,4624,5630,6636.
The multiplication formula of 7 has seven sentences: 17 gets 7,274,3721,4728,5735,6742,7749.
The multiplication formula of 8 has eight sentences: 18 gets 8,286,3824,4832,5840,6848,7856,8864.
The multiplication formula of 9 has nine sentences: 1999, 298, 3927, 4936, 594 15, 6954, 796 13, 8972, 998 1.
Multiplication formula: It is the basic calculation rule of multiplication, division, square root and other operations in ancient China, which has been used for more than 2,000 years. In ancient times, the multiplication formula was from top to bottom, starting with "998 1" and ending with "one to one", contrary to the order used now. Therefore, the ancients used the word "99" at the beginning of the multiplication formula as the name of this formula, also known as "99 table", "99 song" and "99 multiplication table".