One: Integer
1, natural number
2. Positive numbers
3. Negative numbers
Knowledge point 2: Decimal?
1, the meaning of decimal
2. Comparison of decimal size
3. Rewrite the numbers and find approximate values
Knowledge point 3: score
1, the meaning of the score
2. fractional unit?
3. Classification of scores
4, the basic nature of the score
5. What is the relationship between fraction and division?
6. About integral?
7. simplest fraction?
8. General score?
9. Score comparison?
10, decimal part
1 1, number of decimal components?
12, the relationship between the basic properties of fractions and the basic properties of decimals
Knowledge point 4: percentage
1, find the common ratio?
2. What percentage is one number more (or less) than another?
3. What is the percentage of a number?
4. What percentage of a number is known? How did you find this number?
5. Discount?
6. interest rate?
Extended data
Some requirements of number and algebra in primary school mathematics curriculum standards;
1, the sense of number is mainly manifested in: understanding the meaning of number; Numbers can be expressed in many ways; Be able to grasp the relative size relationship of numbers in specific situations; Able to express and exchange information with numbers; Can choose the appropriate algorithm to solve the problem; Can estimate the result of operation and explain the rationality of the result.
2. The sense of symbol is mainly manifested in the following aspects: quantitative relations and changing rules can be abstracted from specific situations and expressed by symbols; Understand the quantitative relationship and changing law represented by symbols; Will be converted between symbols; Can choose appropriate programs and methods to solve the problem of symbol representation.
3. Experience the process of abstracting numbers from daily life, and know numbers, decimals, simple fractions and common quantities within thousands of miles.
4. The content of "number and algebra" mainly includes number and formula, equation and inequality, and function. They are all mathematical models that study quantitative relations and changing laws, which can help people to understand, describe and grasp the real world more accurately and clearly from the perspective of quantitative relations.
Baidu Encyclopedia-Mathematical Standards for Compulsory Education