518 minus 118 55 Easy calculation?

This question can be easily calculated by removing the brackets.

Easy Calculation Method].

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）。

Summary. Simple calculation of 518-135-118.

In this problem, first subtract 518 and 118 to get the number 400, and subtract 135 to calculate the easiest.

Hello, this problem is easy to calculate and you can use the rounding method. The original formula is equal to 600-12-100-25+300-33=(600-100+300)-(12+25+33)=800-70=730.

463+267=730What contributions have you made to the epidemic?

Using the associative law of addition to change the order of operations, the result remains the same, so the original formula is equal to (56+14)+(72+48)=190

With a simple calculation, 465-128 minus 65 results in 302. First, subtract 465 from 128 to get 337. Then, subtract 65 from 337 to get 302.

In addition to the good base, you can also directly subtract 193 (i.e. 128+65) from 465 to get the answer of 302.

The simple calculation of 465-128 minus 65 is to first subtract 128 from 465 to get 337; Then subtract 65 from 337 to get 272. So the final answer is 272.

To do this problem, you can first split the number into different small parts, and then calculate them part by piece. In this way, it can make the calculation of the ride more easy and accurate.

We can use the deformation in the subtraction rule: 465-128 rent reduction 65 = 465-65)-128 = 400 - 128

Now, we can use the spike complement method to easily calculate the result guess type talk:

400 minus 100 gives 300, subtract 28 and the result is 272.

Therefore, the answer to 465-128-minus 65 is 272.

Solution: You can use the pre-judgment absolute addition commutative law and the associative law to subtract 65 from 465 and then subtract the repentance burn to dig 128. Calculation process.

Fifty-six plus fifty-three equals one hundred and nine, and one hundred and forty-seven minus one hundred and nine equals thirty-eight.