In order to cultivate students' computing ability, teach students the methods and skills of oral calculation and quick calculation, train students' agile thinking ability and cultivate students' good sense of numbers, we organized some famous teachers and special-grade teachers in the national curriculum reform experimental area to carefully compile this set of "Huanggang Little Champion's Exercise Book of Oral Calculation and Quick Calculation". Our set of "oral calculation and quick calculation" is based on the previous content and has been carefully revised by the first-line outstanding teachers of famous universities across the country. Functions and characteristics are more prominent and more practical. Specifically, there are the following points:

1. Conduct oral calculation, quick calculation and written calculation training synchronously with the teaching materials.

Closely follow the content of primary school mathematics teaching, and carry out oral calculation, quick calculation and written calculation training simultaneously with the curriculum. We include counting, ratio, identification, conversion of length units, conversion of time units, calculation of area and volume, statistics, solving equations, solving ratios and so on. In the lower grades, oral calculation and quick calculation are the main methods, while in the middle and high grades, quick calculation and written calculation are the main methods.

2. Integrate and absorb the advanced experience of oral arithmetic teaching.

According to the requirements of "Primary Mathematics Curriculum Standard" for oral calculation teaching, we have extensively absorbed the advanced experience of oral calculation teaching in Beijing, Jiangsu, Sichuan, Hubei, Hunan, Guangdong, Shandong and other places, fully analyzed the relationship between oral calculation and written calculation, and designed flexible and diverse training questions.