Primary school mathematics (People's Education Edition) begins to learn scores from the third grade, while the skills of calculating primary school scores from the seventh unit of the third grade (the preliminary understanding of scores) are mainly manifested in two aspects. 1 All integer and decimal calculation skills can be applied to the ingenious calculation of fractions, such as multiplication algorithm, common factor extraction, letter replacement and other common methods.

Learning point

1 The word "average score" explains how it is divided. After removing the average score, it is not a half relationship.

2. What's the score? The statement that "one of them is half" is incorrect. The correct statement should be "one of them is half of this moon cake".

Half of them are called fractional lines, the ones above the bars are called numerators, and the ones below the bars are called denominator.