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农村小学四年制放学第二册包括下述内容:20以内的进位加法和退位减法(二),100以内数的认识,100以内的加减法,表内乘法的一部分(1—4的乘法口诀),元、角、分及市尺、市斤的认识。100以内数的认识,要使学生正确迅速地读写100以内的数,为进一步学习100以内的计算打好基础。本册的计算有两大类:一类是20以内的进位加法和退位减法、整十数
The second volume of the four-year schooling in rural primary schools consists of the following contents: subtraction of carry and subtraction within 20 (ii), recognition of numbers within 100, addition and subtraction within 100, part of the multiplication table (multiplication of 1 to 4 Formulas), Yuan, angle, points and city ruler, city jin understanding. 100 within the number of understanding, to enable students to quickly read and write the number of 100 or less, to further study the basis for calculation within 100. There are two types of calculation of this book: one is within 20 addition and subtraction addition and subtraction, the whole number of ten