84 540 30 18167 25 33 75

Original. Simple calculations are usually rounded or combined.

What is Simple Computing? 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 easy, so that a very complex formula becomes easy to calculate the number.

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. 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 complement each other, this method is more useful.

There are also times when the associative property of addition is used, such as a+b+c, where b and c are complements to each other, so you can combine b and c and multiply it with a. If the + in the above equation is changed to x, it can also be easily calculated by using the associative property of multiplication.

The associative law of multiplication.

The associative law of multiplication 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.

The commutative law of multiplication.

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

The commutative law of addition.

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

Associative law of addition.

a+b）+c=a+（b+c）

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

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

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

Division 2a b c = a c b

Note: When performing simple operations (four operations), you should pay attention to the relationship between the operation symbols (multiplication, division, addition and subtraction) and the big, medium and minor parentheses. Do not skip the arithmetic to avoid arithmetic errors.

After observation, the equation can be transformed into something like this:

This is how this type of equation is calculated and how it is processed.

Calculate 857-281-19-347 -53 with a simple method, when we see this continuous subtraction calculation problem, we can see if the subsequent continuous subtraction problem can be rounded. Then the question can be changed to 857-(281+19)-(347+53).

The simple calculation of the sum of the first n terms is as follows: tn=(an+b)q?+1+bna=a (q-1) b=(a-b) (q-1) to prove that it can be verified with tn-t(n-1).

Solution: II 38x173

Two (40-2) x173

II. 40 173 A 2 Absolute Troubles 173

692o and 346

Erketo changed to 6574

875 (82-47) of Jane's tease Qi calculates the mountain Zen key.

Summary. How to calculate 84*26+84*73+84 in the easiest way.

That's my answer, I hope my answer can help you! Please give a thumbs up and support! If you have any questions, you can continue to ask me! You can also follow me, and feel free to ask me any questions! Noisy spine.

How to calculate 26*124-26*14-260 is the easiest way.

Summary. Hello, 84-(15 3-27) how to calculate, the specific calculation is as follows:

84-(15 3-27) How to calculate simply.

Hello, 84-(15 3-27) how to calculate, the specific calculation is as follows:

Remove the brackets first, and then see if you can use a simple algorithm, the above formula = 217-65 + 83 = (217 + 83) -65 = 300-65 = 235