What is the concept of multiplication associative law distributive law in elementary school?

Multiplicative associative law: multiply three numbers, multiply the first two numbers and then multiply the third number, or multiply the last two numbers first by multiplying the first number, and the result remains the same. (a*b)*c=a*(b*c)

Associative Law Concept: The formula is a times b + c times b = (a + c) times b

Distributive Concept: The formula is (a+c) times b = a times b + c times b

Multiplicative distributive property.

The difference between the associative law and the associative law is: 1. The associative law is for continuous multiplication operations, and the distributive law is for multiplication, addition, multiplication and subtraction mixed operations; 2. The distributive law of multiplication is the multiplication of two numbers, and the position product of the exchange factor remains unchanged. The associative law is the multiplication of three numbers, first multiply the first two numbers by Li You, or multiply the last two numbers first and then multiply with the first number, and the product remains the same.

The associative law of multiplication.

a*b*c=(a*b)*c=a*(b*c), multiply three numbers, first multiply the first two numbers, and then multiply with the third number, or multiply the last two numbers first, and then multiply with the first number, the product remains the same, which is called the associative law of multiplication.

Multiplicative distributive property: (a+b)*c=a*c+b*c, the sum of two numbers multiplied by the third number is equivalent to multiplying these two numbers by this number, and then adding up their products, the product is unchanged, this is called the multiplicative distributive law.

The multiplicative distributive law is different from the multiplicative associative law: the multiplicative distributive law is the sum of two added numbers multiplied by the number of factors multiplied by the number of multiplicative bonds, and the multiplicative associative law is the multiplication of three factors.

The expression of the multiplicative distributive property is different from that of the multiplicative associative law: the expression of the multiplicative distributive property is: (a+b)c=ac+bc, and the expression of the multiplicative associative law is: (ab)c=a(bc).

The multiplicative distributive law is different from the multiplicative associative law: the multiplicative distributive law works as follows: the phase of two numbers and the same number.

Multiplicative distributive property. The law of multiplication is a difficult part of the fourth grade mathematics learning content.

Students who have completed the fourth-grade course should know that the multiplication and distributive law is a very important knowledge point that is not easy to learn, and the laws of operation and the clever calculation of numbers involved in the fourth-grade calculation problems will run through the decimal calculation of the first volume of the fifth grade and the fraction calculation of the second semester, in addition to examining the students' computing ability, it is also aimed at cultivating students' thinking ability.

Easy to calculateThe most commonly used method is the multiplicative distributive property.

Multiplicative distributive property: ax(b+c)=axb+axc, where a, b, c are arbitrary real numbers.

On the contrary, axb+axc=ax(b+c) is called the inverse application of the multiplicative distributive property (also called extracting the common divisor, especially when a and b are complements to each other, this method is more useful, and sometimes the addition associative law is used, such as a+b+c, b and c are complements to each other, you can combine b and c to comuse, and then multiply with a, such as changing the + in the above equation to x, using the multiplicative associative law can also be easily calculated.

The associative law of multiplication.

The law of multiplication is a type of multiplication operation called the law of volts. Definition: Multiply three numbers, first multiply the first two numbers, or multiply the last two numbers, and the product remains the same.

Multiplicative associativity: a b c = a (b c).

Multiplicative distributive property.

Adding (or subtracting) two numbers and multiplying by another number is equivalent to multiplying this number by two additions and carrying (subtracting) respectively, and then adding (subtracting) the two products to give the same number. Represented by letters: (A+B)X C=AXC+BXC

Multiply and tell the law of stupidityIt is the Beijing Normal University versionElementary School MathematicsThe content of the learning in Unit 3 P48 P49 of the first volume of the fourth grade.

The multiplicative distributive property is that the sum of two numbers is multiplied by a number, which can be multiplied by each number and then added.

a+b) c=a c+b c] (letter representation) [a c+b c=(a+b) c] (letter representation).

(Graphical representation) [Graphical representation of the sock gear tie variant).

Inverse of the multiplicative distributive law:

1. The formula of the multiplicative distributive law: (a+b) c=a c+b c2, the formula of the associative law of multiplication: (a b) c=a (b c)3, the formula of the commutative law of multiplication: a b=b a

4. The formula of the associative law of addition: (a+b)+c=a+(b+c)<>

Multiplicative associativity: a b c = a (b c).

Multiplicative distributive property (a+b) c=a c+b c

1. Multiplicative distributive property.

It refers to the multiplication of the sum of two numbers by one number, which can be multiplied by this number and then added; Pants a c+b c=(a+b) c.

2. Multiplication associative law.

Multiply three numbers, first multiply the first two numbers, and then multiply another number, or multiply the last two numbers first, and then multiply with another number, and the product remains the same; (ab)c=a(bc)、(a·b)·c=a·(b·c)。

3. Multiplicative commutative law: when two numbers are multiplied, the position of the commutative factor is large, and their product is unchanged; a×b=bxa。

4. Associative law of addition.

At the age of three, add the first two numbers, or add the last two numbers first, and the sum remains unchanged; a+b+c=a+(b+c)。

5. Commutative law of addition: the addition of two additions, the position of the exchange additions, and the sum are unchanged; a+b=b+a，a+c=c+a。

Multiplicative distributive property.

The multiplicative distributive law refers to the multiplication of the sum of two numbers by a number, which can be multiplied by the number and then added.

Multiplicative commutative law: When two numbers are multiplied, the position of the commutative factor, their product is unchanged, and the mammoth is called to do the multiplicative commutative law.

The associative law of multiplication.

Multiply three numbers, first multiply the first two numbers of Ranna, and then multiply them with another number, or multiply the last two numbers first, and then multiply them with another number, and the product remains the same. Hope.

The multiplicative distributive property is represented by letters as (a+b) c=ac+bc

There are two kinds of operation symbols, the multiplicative associative law is represented by letters as (ab)c=a(bc), and there is only one operation symbol.