1 and the two meanings of multiplication;

(1) means: What is the sum of several?

⑵ means: What is the sum of several?

2. Three meanings of division:

(1) means: divide a number into several parts on average, and each part is several parts. (the meaning of sharing equally)

(2) indicates that a number has several digits (including the meaning of division)

(3) indicates that one number is several times that of another.