Taking the number "2" as an example, the correct split format is: 2 =1+1; 2=2+0; 2=0+2。

Significance of fractional formula in primary school students mathematics;

Factorization is factorization-turning a polynomial into the product of several algebraic expressions is called factorization of this polynomial, which is also called factorization of this polynomial.

Definition of decomposition factor:

Turning a polynomial into the product of several algebraic expressions in a range of values is called factorization of this polynomial, which is also called factorization of this polynomial.

Factorization is one of the most important identical deformations in middle school mathematics. It is widely used in elementary mathematics, and it is also widely used in finding roots and solving quadratic equations with one variable in mathematics. It is a powerful tool to solve many mathematical problems.

Factorization is flexible and ingenious. Learning these methods and skills is not only necessary to master the content of factorization, but also plays a very unique role in cultivating problem-solving skills and developing thinking ability. Learning it can not only review the four operations of algebraic expressions, but also lay a good foundation for learning scores; Learning it well can not only cultivate students' ability of observation, thinking development and calculation, but also improve students' ability of comprehensive analysis and problem solving.

Refer to the above? Baidu encyclopedia-factor decomposition