1. Last week, we learned fractions. Fractions have numerator, denominator and fractional line, for example, 1/3, where 3 is denominator, 1 is numerator and the middle horizontal line is fractional line.

2. Scores are used in many places in life. For example, a book has thirty pages, and each page is 1/30 of a book. Fractions can also be added and subtracted! For example, half plus half equals two, which is 1. Why is this happening? If you divide a cake into two parts, each part is 1/2 of the cake, and then put the two parts together, there are two parts 1/2, which is just a cake. When adding and subtracting fractions, if the denominator is the same, only the numerator is added, regardless of the denominator. And 2/2 of the numerator and denominator are the same, which is 1.

3. I also learned to compare the scores. The teacher taught us the formula: numerator is the same as denominator, the fraction with large denominator is small, and the fraction with small denominator is large; Denominators are the same as numerators, with large numerator scores larger and small numerator scores smaller.

4. The teacher also reminded us that when writing scores, we usually write the fractional line first, which means the average score, then the denominator and finally the numerator.