2, because, 1 m = 10 decimeter. 1 m3 = 1 m×1m = 10 decimeter×10 decimeter =10 decimeter.

3. Cubic centimeter (cm3) is a mathematical term and a unit of capacity measurement. The conversion relationship is 1 m3 = 1000 cubic decimeter = 1000000 cubic centimeter. The relevant unit is cubic decimeter, cubic meter.

Mathematics learning method

1, form a good habit of learning mathematics. Establishing a good habit of learning mathematics will make you feel orderly and relaxed in your study. The good habits of high school mathematics should be: asking more questions, thinking hard, doing easily, summarizing again and paying attention to application. In the process of learning mathematics, students should translate the knowledge taught by teachers into their own unique language and keep it in their minds forever. Good habits of learning mathematics include self-study before class, paying attention to class, reviewing in time, working independently, solving problems, systematically summarizing and studying after class.

2. To understand and master the commonly used mathematical thinking methods in time and learn high school mathematics well requires us to master them from the height of mathematical thinking methods. Mathematics thoughts that should be mastered in middle school mathematics learning include: set and correspondence thoughts, classified discussion thoughts, combination of numbers and shapes, movement thoughts, transformation thoughts and transformation thoughts.

3. Gradually form a "self-centered" learning model. Mathematics is not taught by teachers, but obtained through positive thinking activities under the guidance of teachers. To learn mathematics, we must actively participate in the learning process, develop a scientific attitude of seeking truth from facts, and have the innovative spirit of independent thinking and bold exploration.

4. Take math notes, especially the different aspects of concept understanding and mathematical laws, as well as the extra-curricular knowledge developed by teachers in class. Write down the most valuable thinking methods or examples in this chapter, as well as your unsolved problems, so as to make up for them in the future.