123 54 246 2 369 14 How much is easy calculation?

The simple operation of equation 123 54 + 246 2 + 369 14 is as follows:

If you have a problem, you can get the formula 123*54+246*2+369*14, and you can split the formula to split 246 and 369 into 123*2 and 123*

Is it understandable that 246 is equal to 123 times 2 and 369 is equal to 123 times 3? Then extract the common factor and take a look.

Solution, we can write 246 as 123 2 and 369 as 123 3Yes.

Original = 123 (54+4+14 3).

Note, look!

25 74+25 26) 4 Simple calculations can be performed using the multiplicative distributive property and the concise associative property:

25 (74+26) 4 - Apply the multiplication assignment law to extract the common factor 25

(25 4) 74 – Applying the multiplicative commutative and multiplicative associative laws 25 and 4 combining the pre-multiplication.

Extended Information: Multiplicative Distributive Property:

It means that the sum (or difference) of two numbers is multiplied by a number, and they can be multiplied by this number respectively, and then the resulting product can be added (subtracted), and the result will not change.

Indicated by letters:

a+b）× c=a×c+b×c

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

2.Multiplicative commutative law:

When two numbers are multiplied, the position of the exchange factor, and their product is invariant, is called the multiplicative commutative law.

A b = b a in letters

3.Multiplicative Associative Law:

Multiply three numbers, first multiply the first two numbers, and then multiply with another number, or Chong Lao first multiply the last two numbers, and then scatter with another number with the rise and multiply, the product remains the same. It's called the multiplicative associativity law.

Represented by letters: (a b) c=a (b c).

Hello, the process of solving the problem is shown in the return to the quarrel diagram and the leaky branch waiter. Hope. Take the old.

The parentheses 25 74 + 25 26 are bracketed, and then multiplied by four to the sum of 25 74 + 26, and then multiplied by the socks with their urgency to form 100 and then multiplied by the brother good letter to four, so it is equal to 2500 4 = 10,000.

It is possible to use the multiplicative distributive law to perform a simple calculation of the laughter and the closing of the world

79 (37+15-2) — Extract the common factor 79 (80-1) 50 — Split 79 into (80-1)80 50-1 50 — Apply the multiplicative distributive property to multiply 80 and 1 by 50, respectively.

Extended Information: Multiplicative Distributive Property:

Multiplying the sum (or difference) of two numbers by one number is equal to multiplying the two numbers by this number, and then adding (subtracting) the products of the two numbers, and the result remains the same.

Indicated by letters:

a+b）× c=a×c+b×c

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

79 37+79 15-79 2 Easy calculation?

Solution: According to the known conditions of this answer, the columnar formula is calculated:

1. Original formula: 79 37+79 15-79 22, step: =79 (37+15-2).

Stove car = 79 50

Sen Bianhui =3950

3. Result: 3950

Since there are 79 in all three multiplications, extracting the common factor gives us 79 (37+15-2)=79 50=3950

There is nothing to do with this problem, and the hail digging method is calculated directly. The positive source nucleus is 56 47 79 37 = 5555.

This question = (37 + 15-2) x 79 = 50 x 79 = 50 x 80 - 79 = 4000-79 = 3921Hope it helps.

The computer calculates, how simple.

The easy calculation process is as follows:

1. Extract the original formula: 56 (125 7).

2. Calculation process:

3. Calculation result: 1000

Because multiplication and division belong to the same level of operation, this parenthesis can be removed. Then we do the calculation of 56 7 and multiply it by 125.

=（13×3）×（125×8）

For example: 25 x 4 = 100

Or 11*11=121

This kind of thing can be collected and sorted out on a regular basis, and then memorized by heart, and it will be very convenient when it comes to exams.

99 87-12 99++99 25 Easy calculation?

This problem is a mixture of addition, subtraction, and multiplication, in which there is the same unfilial multiplier, as long as this number is put forward and then calculated, it can be detected to be simple in delay.

99x(87-12+25)

99x100

One is that the simple high ridge problem is always written incorrectly, and the two numbers and the other numbers are confused. Qi Bu infiltrated.

99 (liquid source height 87-12+25).

We can calculate in detail through the simple calculation process of the upper cracked hail surface, and the answer is 9900.

Looking closely at the equation, it is obvious that the common factor of the sock chop is extracted first to calculate the cheats.

Do you understand? This is the solution to the whole lease orange, learn it next time you can do it yourself.

Multiply the first two numbers by the middle of the royal first, or multiply the last two numbers first, and then multiply the third number with Youpei, and their product remains the same.

Since there are 99 in all three multiplications, we can get 99 (87-12+25)=9900 by using the inverse of the multiplicative distributive law

Eighty-seven minus twelve equals seventy-five, and seventy-five plus twenty-five equals one hundred. One hundred multiplied by ninety-nine equals nine thousand nine hundred.

This is correct, it is not so complicated than the scenic dryer, if you can, you can make a way.

This problem can be calculated by using the inverse operation of the multiplicative distributive property, i.e., a b+a c=a (b+c).

You are good at the chain, 99 87-12 99+99 25

The implicit simple operation is:

99x87-12x99+99x25

87-12+25)x99

100x99

Consumers use multiplication, distribution rate, inverse mode bridge, and are cautious.

Bring 99 up, and combine the addition and subtraction of other numbers.

Change 99 (87-12+25) to equal 99 times one hundred.

Is the stem supposed to be like this: 99 87-12 99+99 25 if it is =99 (87-12+25)=99 100=9900

The simple calculation of hail is as follows.

99 (87-12+25)

Ant Hall 9900

Hope. <>

Mention the old Li Shi took the public because of the sedan chair disturbed the number of 99].

Solution: 99 87-12 99+99 25=99 87-99 12+99 25=99 (87-12+25)=99 (75+25)=99 100=9900.

Hello, the simple calculation idea of 108 59-59 78-54 30 is as follows:

The first step is to use the multiplicative distributive property to extract the same factors in the equation with the same factor, and then add and subtract to obtain the equation 59 (108-78)-54 30, and obtain the equation 59 30-54 30.

In the second step, the same factor 30 is extracted from the same law, and the equation is 30 (59-54), and 30 5 is further calculated, and the final answer is 150.

The specific calculation and writing process of the equation is as follows: