According to the problem of multiplication or division, normalization can be divided into positive normalization and negative normalization.
One problem at a time can be solved in one step. Also known as "one-to-one"
Two-step operation can solve the problem of twice normalization. Also known as "two to one"
Normalization problem: after finding a "single quantity" by equal division, the normalization problem of the result is calculated by multiplication.
Denormalization problem: the normalization problem of the result calculated by division after the "single quantity" is obtained by equal division.
The key to solving the problem: from a group of known corresponding quantities, the number of a copy (single quantity) is obtained by equal division, and then the result is calculated according to the requirements of the topic.
Quantity relationship: single quantity × copy number = total quantity (positive normalization)
Total quantity ÷ single quantity = number of copies (normalized)