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What are the knowledge points of the fourth grade algorithm?
"Arithmetic" is the knowledge point of Unit 3 in the second volume of Grade Four Mathematics. With the orderly progress of online classes, the fourth-grade students should have learned the content of this unit. So what are the knowledge points of the fourth grade algorithm?

1, additive commutative law. When two numbers are added, the positions of the addend are exchanged and the sum is unchanged.

2. Additive associative law. Add three numbers, first add the first two numbers, or add the last two numbers first, and the sum remains the same.

3. Multiplicative commutative law. When two numbers are multiplied, the position of the exchange factor remains unchanged.

4. Multiplicative associative law. Multiply three numbers, multiply the first two numbers, or multiply the last two numbers first, and the product remains the same.

5. Law of multiplication and distribution. When the sum of two numbers is multiplied by a number, you can multiply this number separately and then add it.

6, additive commutative law and the law of association.

7. Multiplicative commutative law and associative law are used together.

8. Simple operations in multiplication.

What are the relevant contents about the knowledge points of arithmetic in grade four?