How do you write 1 5 105 simple calculations?

Chinese name]: Simple calculation.

The most commonly used method: multiplicative distributive property.

Type]: A special kind of calculation.

Characteristics]: It uses the laws of operation and the basic properties of numbers.

Summary]: Simple calculation is a special kind of calculation, which uses the laws of operation and the basic properties of numbers, so as to make the calculation simple, so that a very complex formula becomes easy to calculate the number.

Law]: 1) Multiplicative distributive law: The most commonly used method in simple calculations is the multiplicative distributive law.

The multiplicative distributive property refers to ax(b+c) = axb+axc, where a, b, c are arbitrary real numbers. Conversely, axb+axc=ax(b+c) is called the inverse of the multiplicative distributive law (also known as extracting the common divisor, especially when a and b are complements each other, this method is more useful). There are also times when the associative law of addition is used.

For example, if a + b + c and b and c are complements to each other, you can combine b and c and multiply it with a. For example, if the + in the above equation is changed to x, the multiplicative associativity is used.

It can also be easily calculated.

2) Multiplicative associative law: Multiplicative associative law is also a method of doing simple operations, which is expressed by letters as (a b) c=a (b c), and its definition (method) is: multiply three numbers, first multiply the first two numbers, and then multiply the third number; Or multiply the last two numbers first, and then multiply them with the first number, and the product remains the same.

It can change the order of operations in multiplication operations, and the multiplication law is not used very much in daily life, mainly in some more complex operations to play a simple role.

3) Multiplicative commutative law: The multiplicative commutative law is used to invert the position of individual numbers: a b = b a

4) Addition commutative law: The additive commutative law is used to swap the positions of individual numbers: a+b=b+a

5) Additive associative law: (a+b)+c=a+(b+c).

Properties]: 1) Subtraction 1: a-b-c=a-(b+c).

2) Subtraction 2: a-b-c=a-c-b

3) Division 1: a b c = a (b c).

4) Division 2: a b c = a c b

Typical example]:

The sketch is calculated as follows:

Information on the exhibition of the Hirohashi Shirt:The sign rule of multiplication: multiply two numbers, the same sign is positive, the different sign is the ridge and the negative, and put the absolute value.

Multiply. Multiplication simple operation rule:

1) Multiplicative commutative law: a*b=b*a

2) Multiplicative associativity.

a*b*c=(a*b)*c=a*(b*c)3) multiplicative distributive property.

a+b）*c=a*c+b*c；(a-b)*c=a*c-b*c simple operation rule of division:

1) The invariant property of the quotient is the dividend.

Multiply or divide by a number (except zero) with the divisor, and the quotient does not change.

a b = (a*n) (b*n) = (a n) (b n)2) the sum (difference) of two numbers divided by a number sensitive cavity, which can be used to remove these two numbers respectively (in the case of divisible ones), and then find the sum (difference) of the two quotients.

a+b）/c=a/c+b/c；（a-b）/c=a/c-b/c

The simple calculation is as follows: Original =

The brother of the nucleus is simple and the calculation of how to write and dust chang.

Summary. Hello, easy calculation.

With a simple calculation, how to calculate.

Hello, easy calculation.

Method analysis: Hello, this question first splits 102 into 100+2 forms, and then uses the simple calculation process of the distributive law of the multiplication and respectful practice.

How do you calculate the simple calculation?

Hello, easy calculation.

Hello, the equation has been organized, both multiplication methods contain common factors, and the simple calculation process using the multiplicative distributive property is equal to 54.