This problem is calculated by using multiplication distribution law and multiplication combination, and the steps are as follows:

33333×66666

=33333×(22222×3)

=33333×3×22222

=99999×22222

=( 100000- 1)×22222

= 100000×22222-22222

=2222200000-22222

=2222 177778

Firstly, 66666 is divided into 2222× 3 by multiplying distribution rate, and then by multiplying combination law. Calculate 3333× 3 first, and the product is 99999. At this time it is 99999×22222. By using the law of additive combination, 99999 is converted into 10000- 1, and it can be obtained.

Extended data

Simple calculation method

1, multiplicative distribution law

The most commonly used method in simple calculation is multiplication and distribution law. Multiplication and division means ax(b+c)=axb+axc, where A, B and C are arbitrary real numbers. On the contrary, axb+axc=ax(b+c) is called the inverse application of multiplication and division (also called finding common divisor), especially when A and B are complementary to each other, this method is more useful.

2. Multiplicative associative law

The multiplicative associative law is also a simple method, which is expressed by letters as (a×b)×c=a×(b×c). Its definition (method) is: multiply three numbers, first by the first two numbers, then by the third number; Or multiply the last two numbers first, and then multiply the first number, and the product remains the same.

3. Multiplicative commutative law

Multiplicative commutative law is used to exchange the positions of various numbers: a× b = b× a.

4. additive commutative law

Additive commutative law is used to exchange various numbers: a+b = b+a.

5. Additive associative law

(a+b)+c=a+(b+c)

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