How to calculate 201x49 49?

201-1）x49

200x49

Easy calculation

Simple arithmetic is a special kind of calculation, which uses the laws of operation and the basic properties of numbers, so as to make the calculation easy, and make a very complex formula easy to calculate.

Simple operation is a kind of advanced mixed operation, is the skill of mixed operation, learn simple operation, not only can improve the computing ability, calculation speed, more importantly, so that the learned definitions, theorems, laws, laws, properties, laws and so on to achieve the realm of integration, is the most able to exercise students' thinking ability, open up students' ideas of a type of question.

1. Multiplicative distributive property.

The most common method used in simple calculations is the multiplicative distributive property. The multiplicative distributive property refers to ax(b+c) = axb+axc, where a, b, c are arbitrary real numbers.

2. Multiplication associative law.

The multiplicative associative law is also a method of doing simple operations, which is represented by letters as (a b) c=a (b c), which can change the order of operations in the multiplication operation, and is not used much in daily life, mainly in some more complex operations to play a simple role.

3. Multiplication commutative law.

The commutative property of multiplication is used to invert the positions of individual numbers: a b = b a.

4. The commutative law of addition.

The commutative property of addition is used to invert the positions of individual numbers: a+b=b+a.

5. Associative law of addition.

a+b）+c=a+（b+c）。

The simple calculation process is as follows.

Hope. <>

Hello, there are 49 on both sides, then put 49 up, that is, 49 * (49 + 1) = 49 * 50 = 2450, if you think 49 * 50 does not seem very simple, you can also split it into 50 * 49 = = 50 * (50-1) = 50 * 50-50 = 2500-50 = 2450

According to the characteristics of the equation and the characteristics of the numbers, this problem can be calculated by using the multiplicative distributive property: 49 49+49

49 49+49 is a simple algorithm, first of all, we observe the three numbers in the formula, all three numbers are 49, so the distributive associativity of multiplication can be transformed into 49 (49+1)=49 50=(50-1) 50=2500-50=2450, after two consecutive transformations, the above formula is relatively simple to calculate.

49x(49+1)49x50

Extract the common factor, round it up, and achieve simple operation.

Simple algorithm: 49x49+49

49x49＋49x1

49x（49＋1）49x50

Hopefully, thank you!

Solution: The simple calculation method is as follows.

The method of extracting common factors is used to simplify the calculation, that is, the original formula = 49 * (49 + 1) = 49 * 50 = 2450.

Calculated by the extraction common factor method, 49*49+49=49*(49+1)=(50-1)*50==2500-50=2450

Solution: =49x(49+1).

Extract the common factor first, and then calculate.

The common factor 49 comes out, as follows.

It is directly 49 times (49 + 1) = 49 times 50 = 2450.

You can merge the two sides. It becomes 49 times the parentheses, and the parentheses are 49+1 inside. The last is equal to 49 50 = 2450.

This problem can be reversed by multiplying the allocation rate.

Solution: 49 49+49

To pay more attention to observation and look at the characteristics of numbers, this question adopts the multiplicative associative law, and the specific simple calculation method is as follows: 49x49 ten 49

49x（49+1）49x50

The main point is the associative law of multiplication.

Original = 49*(49+1).

Hello, this question can be used with 49 (49+1)=2450

49 49+49.

Apply the multiplicative distributive property.

Extended Information: Multiplicative Distributive Property:

Adding (or subtracting) two numbers and multiplying another number is equivalent to multiplying the number by two additions (subtractions) respectively, and then adding (subtracting) the two products to give the same number.

Indicated by letters:

a+b）× c=a×c+b×c

Variant: a-b) c=a c-b c

Just extract the common factor.

Dear, according to the title. The simple arithmetic is 46 (1+49) 46 50=2300

According to the characteristics of the number and the notation of the operation, the problem is calculated using the multiplication distribution rate, and 49 is regarded as 49x1axb+axc

a（b+c）

49x（49+1）49x50

Summary. Hello, I am Mr. Fang Tengfei! I've seen your problem. Since it takes time for the answer to be written, please be patient for 2 or 3 minutes

Be sure not to close the order directly, so that you can't see the answer I sent you, thanks to 149x101-49 for the easy calculation.

Hello, I am Mr. Tongna Yinfang Tengfei! I've seen your problem. Since the text of the answer needs time from the bureau, please be patient and wait for 2 3 minutes Yo Be sure not to end the order directly, so that you can't see the answer I sent you Minbi, thank you

149x101-49 for easy calculation.

Hello, the answer is that it can be written as 100+49 shape hole formula, then the simple calculation process is as follows: =(100+49) 101-49 1=49 (101-1)+100 101=4900+10100=15000 The question is related to mixed operations. Hope my Sakura Silver can help you.

Laughing and singing].

Summary. 77x4x5

49+49x49 for easy calculation.

Hello, kiss <>

49 + 49x49 simple calculation = 49 (1 + 49) = 49 50 = 2450 <>

Is it easier?

Write the first 49 as 49 1 Oh, and then use the multiplication distributive law Oh <><

It's the easiest, kiss <>

A simple calculation of this problem.

Write 99 as 100-1.

77x4x5

Simple. 77x4x5=77×（4×5）=77×20=154039x101-39

39x101-39=39×（101-1）=39×100=3900

This question is simply called posture and calculation, and it can be seen as 49 11-49 1, which is equal to 49 (11 1) Zheng Songjue = 49 10 = 490, Sakura Split.