Mathematics Decomposition Course for Grade One: First of all, the addition and subtraction within 10 need to be simple, fast and accurate, which is the foundation; Less first, then more, starting with the addition within 20, step by step. You can add in 20 minutes, and then practice subtraction. Addition and subtraction can be done. Finally, practice the mixed problems of addition and subtraction.

If the child's foundation is poor, parents can teach the child the method of decomposition, such as getting a number, starting with 1, and then saying: 6 can be divided into 1 and 5, and then moving one, saying that 6 can be divided into 2 and 4 until 6 can be divided into 5 and 1. This will be more orderly in thinking and easier for children to understand and describe.

Importance of Mathematical Decomposition Method in Senior One.

Digital reasoning has a high demand on students' thinking, which requires many thinking steps, which is not conducive to students' mastery and eventually blurts out.

This is related to the algorithm we use to calculate carry addition and abdication subtraction. Algorithms are nothing more than counting and digital reasoning. Counting method is to calculate by counting, including counting by object and counting simply. Digital inference refers to the method of calculating with numbers, including ten-sum method and split method.

The addition of arithmetic fractions and negative numbers has several important properties. It is interchangeable, which means that the order is not important, it is interrelated, which means that when more than two numbers are added, the order in which the addition is performed is not important. Repeatedly adding 1 is the same as counting; Adding 0 will not change the result. Addition also follows related operations.