I. Re-understanding of the score (1)

1, the meaning of the whole "1": One or several objects can be regarded as a whole, and this whole can be represented by the natural number "1", usually called the unit "1".

2. The meaning of score: divide a whole into several parts on average, one or several of which can be expressed by score.

3. According to the number represented by the score, you can find the corresponding total. What is the denominator? The whole is divided into several parts.

4. The whole corresponding to the same score is large, and the specific number is large; The corresponding whole is small, and the specific number is small.

Second, the recognition of scores (2)

1, meaning of decimal unit: Fractions like 1, 1… are called 234-bit decimal tables.

2. Size of decimal unit: the larger the denominator, the smaller the decimal unit; The smaller the denominator, the larger the decimal unit. 123

Divide a whole into several parts on average, and there are several parts in this whole. Divide a whole into four parts on average, and this whole has four parts.

4. What is the numerator of the score? There are several such fractional units in this score. The molecule in the example is 7, and two molecules have 7 1.

5. Fractions with different denominators have different decimal units.

Third, true points, false points and belt points

1, the meaning of true score: scores like 1, 0, 5, … are all true scores. The numerator of the true score 2468 is less than the denominator, and the true score is less than 1.

2. The meaning of false scores: scores like 3, 4, 9… are all false scores. The numerator of false 48 points is equal to or greater than the denominator. False score is greater than or equal to 1.

3. Meaning expressed by scores: Scores like 15, 27, … are all numbers with 68 points. Band score consists of integer (excluding 0) and true score. When reading fractions, read the integer part first, then the fraction part, with a "you" in the middle. When writing a fraction, write the integer part first and then the decimal part.