Simple arithmetic of 144 472 556 228?

The simple calculation process is as follows. Hope.

Solution: This problem is calculated in a simple way, and the ability can be rounded.

The two sets of integers of hundreds can be combined together to calculate.

144-472-1056-228

144 dec. 556) a (472 dec. 228).

700 to 700

144-472+556-228:

144 dec. 556) a (472 dec. 228).

700 to 700

This problem can be easily combined by using the additive commutative and additive associative laws to combine the numbers that can be rounded.

It is directly 144 + 556 - (472 + 228) = 700 - 700 = 0.

Simple arithmetic of 144 472 556 228?

The title should be:

144 dec. 556) a (472 dec. 228).

700 to 700

Solution ideas:

The simple calculation process of the pin body with loss is as follows:The law of continuous subtraction is wide:If a number is subtracted by two numbers in a row, it is equal to the sum of the two numbers after subtracting this number, and the number remains unchanged;

Letters indicatea—b—c＝a—(b＋c)；a—(b＋c)＝a—b—c；

In the addition and subtraction of three numbers, the positions of the last two numbers are exchanged, and the number is unchanged.

Letters indicatea—b—c＝a—c—b；a—b＋c＝a＋c—b

Your problem is a math problem, and I can use mental arithmetic or approximation to quickly calculate 473-51-149-173. Sail branches.

First, we can add 149 and 51 together to get 200. Then, subtract 200 from 473 to get 273, and subtract 173 from 273 to get 100.

Therefore, 473-51-149-173 is equal to 100.

The subsistive Sakura clan envy is 13, the single digit is 3, the ten digits are added, plus the single digit is 1,1 + 5 + 4 + 7, 17 hundred is added, and the ten digits are added 1,1 + 1 + 1,3

That's 473-373

Equal to 100

Calculate 544-144=400 and subtract 237 to get 163

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. 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 operation in the multiplication operation, and the multiplication method is not used very much in daily life, mainly in some more complex stool calculations.

The commutative law of multiplication.

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

Solution: 467-142 + 258 = 325 + 258 = 583, there is no simple algorithm for this, it can only be calculated in order.

467-142+258 Jian Kai chaotic cracking and closing the stool operation: accompany the envy.

The simple operation of 467-142+258 is: 467+(258-142)=467+116=583

Solution: This problem can be calculated by using the additive commutative law and the associative law to calculate the loss of the orange wax and let the bureau be calculated. Calculation process.

A simple calculation of 458+231+765?

Therefore, the final answer to this question is 1454.

Law. 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 property (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 bad numbers, and then multiply them with 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 multiplicative commutative law is used to swap the positions of individual numbers: a b = b a additive commutative law.

The additive commutative law is used to change the position of each number in the hunger rotation: a+b=b+a, the additive associative law.

a+b）+c=a+（b+c）

458 + 231 + 765, if you change the problem for a simple calculation, you should use 235 + 765 + 458-4, so that Qingyou calculated the final result of the false judgment, which is 1454.

Simple calculation of the trembling Wang calculation square in the hole burning method: 458 + 231 + 765 (sell virtual 458 4) + (231 + 4) + 765 454 + 235 + 765 454 + (235 + 765) 454 + 1000 1454

Hello! It's a pleasure to raise your questions!

A simple calculation of 458+231+765?

Original 235+765 458 4

Yours is the greatest support to me! Good luck! Thank you!

There are other ways to slowly reconcile, and one by one to do noisy calculations. 184 = 100 + 57 + 27, Sun Shi ,,, 33 = 30 + 3, 100 + 27-30-3 = 100-6 = 94.

Mention the minus sign, first add the last two, the original formula = 184 - (57 + 33) = 184 - 90 = 94.