Prime numbers are numbers too!
So, decimals can also perform calculations such as addition, subtraction, multiplication, and division.

However, while prime numbers may appear unusual, they are actually structured like natural numbers! Therefore, calculations for prime numbers are performed in the same way as for natural numbers.
This is a 'completely precious book on prime numbers' that breaks down the concepts into small pieces so that you can completely digest them, just like how natural numbers are calculated!!!

1.
Visualize it so you can remember it for a long time!
Even if you fully understand the concept, you must remember it well.
That way, when you encounter a problem, you can solve it quickly.
We explain all the principles behind the calculations and visualize the content again to make it easier to remember.
See visualized decimals to help you understand where to place the decimal point in addition and subtraction, where to place the decimal point after calculating multiplication, and where to place the decimal point for the quotient and remainder after calculating division.
It will be long and easy to remember.

2.
Approach the meaning first, then the formula!
'Formula' is the language of mathematics.
That's why food has meaning.
Just like the language we use in our daily lives.
However, the language used in mathematics is not a language for expressing emotions or persuading others.
The language of mathematics is logical, a language that expresses cause and effect.
For example, one plus one equals two.
In the language of mathematics, this is written as 1+1=2.

The same applies when doing decimal calculations.
I am explaining by first understanding it in words and then translating it into a formula.
Therefore, rather than calculating mechanically, you can calculate by thinking about the meaning and developing the content logically.


3.
Approach it in many ways!
Even though it is a book that deals with operations of prime numbers, it does not only contain operations.
We explain in detail the principles and reasons why the calculations must be done this way, and also show that there are many other ways to solve the problem.
Since there are various calculation methods, you will naturally know which method is the simplest and which calculation method is best to use in which situation.

4.
Free video lectures so you can study on your own!
All concept explanations are accompanied by video lectures.
Additionally, for problem sections that would benefit from additional explanation, we have included problem-solving lectures in QR codes.
You can view the lecture immediately by scanning the QR code without separate registration, and you can check out more reference materials by visiting Mathbus (www.mathbus.co.kr).
You can enjoy studying with the cheerful, refreshing, and exhilarating lectures of a former EBS teacher.