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新编小学数学第七册(试用本)包括下面—些内容:小数的意义和性质,小数的四则计算,小数四则混合运算和应用题,三角形、平行四边形和梯形,丈量土地,这册教材的内容大体可以分为小数和几何知识两大部分。在学生熟练地掌握了整数四则计算和初步认识小数、分数的基础上,本册教材系统地讲解小数。小数在日常生活和生产中应用很广泛,学生学了小数,计算能力和解决实际问题的能力可大大提高一步,因此,教好这部分内容具有十分重要的意义。小数与整数在写法和计算法则等方面有许多相近之
The seventh volume of the new elementary school mathematics (trial version) includes the following contents: the significance and nature of decimals, the four calculations of decimals, the decimal four-hybrid operation and application of questions, triangles, parallelograms and trapezoids, measuring the land The content can be roughly divided into two parts of decimal and geometric knowledge. Grasp the students master the integer four and preliminary understanding of the decimal, fractional basis, the textbook to explain the decimal system. Decimals are widely used in daily life and production. Students' ability to learn decimals, computing power and solve practical problems can be greatly enhanced. Therefore, teaching this part is of great significance. Decimals and integers have many similarities in writing and calculating rules