Editor's Recommendation:
Mental arithmetic is a kind of mathematical calculation method. In a very short time, without the help of any calculation tools, learners can quickly and accurately master the mental arithmetic methods of addition, subtraction, multiplication, and division of any number with one kind of thinking and one method, so as to quickly improve learners' mental arithmetic ability. It is very important both for exams and for the exercise of mathematical thinking. There are many books on mental arithmetic and oral arithmetic on the market. Most of them are mainly composed of a large number of exercises and rarely relate to reality. However, the need for calculation exists in life.

In the form of comics, this set of books shows the application scenarios of calculation, analyzes the thinking of calculation, explains the calculation process, and provides an appropriate amount of exercises as the characteristics of this set of books. For parents, laying a good foundation in calculation is very important for the learning of advanced mathematical knowledge.

★100 application scenarios of mental arithmetic are presented in vivid and interesting comic forms, inspiring children to start from needs, exert their own mathematical initiative, and develop the habit of logical thinking in mathematics.
★Exercise mathematical thinking and summarize 100 mental arithmetic skills: Observe the characteristics of the arithmetic expression. First split, then regroup. Think first when calculating. Exchanging and rounding up are more flexible. Mental arithmetic has logic, elimination, and transformation.
★Explain the calculation process in detail. Learn while practicing to improve learning efficiency.

This series includes 5 titles:
"Basic Operations"
"Three-Digit Calculation"
"Multi-Digit Calculation"
"Multiplication and Division Operations"
"Special Operations"

"1 Minute Comic of Learning Speed Algorithm" is a magical guide to quick calculation skills in mathematics tailored specifically for primary school students. In the form of comics, the book depicts and lists a large number of interesting life scenarios that require quick calculation. It not only introduces dozens of methods for quick calculation and clever calculation in mathematics but also indicates in which situations we will use these magical methods and skills. In the form of example analysis, the book also carefully explains the calculation process and provides corresponding exercises to help children master knowledge points and quickly learn quick calculation skills.

This book can not only improve children's math grades but also stimulate their interest in calculation, change their way of thinking in calculation, increase their confidence in learning mathematics well, broaden their thinking, expand their thinking, and easily master the subject of mathematics.

The whole book is divided into 5 volumes, which are easy to learn step by step, vivid and interesting:
1. "1 Minute Comic of Learning Speed Algorithm 1: Basic Speedy Calculation"
This book extracts various mathematical thinking methods such as exchanging and rounding up, splitting and rounding up, and splitting and eliminating from very basic one-digit addition and subtraction and two-digit addition and subtraction. It can help children quickly master the quick calculation skills of addition and subtraction.

2. "1 Minute Comic of Learning Speed Algorithm 2: Three-Digit Calculation"
Based on "Basic Speedy Calculation", this book extends the thinking methods of splitting and eliminating to the addition and subtraction calculation of three-digit numbers. In addition, the decomposition thinking of "breaking down into parts" is added. It turns large numbers into small ones and simplifies complexity to improve children's calculation speed.

3. "1 Minute Comic of Learning Speed Algorithm 3: Multi-Digit Calculation"
This book enables children to easily handle addition and subtraction calculations of four-digit, five-digit or even more complex large numbers. The secret of multi-digit calculation is "splitting and regrouping". Splitting is to split a complex multi-digit number into multiple simple numbers, then exchange and combine these simple numbers. Finally, combined with the method of rounding up or eliminating the same end digits, the final result is calculated.

4. "1 Minute Comic of Learning Speed Algorithm 4: Multiplication and Division Operations"
This book presents a new way of thinking - transformation thinking. Multiplication is actually a deformation of addition, and division is a deformation of subtraction. According to this principle, this volume summarizes more than ten calculation scenarios of multiplication and division. It transforms the multiplication and division operations involved in these scenarios into addition and subtraction operations. This not only simplifies the calculation method but also enables children to learn this transformation thinking in the calculation process.

5. "1 Minute Comic of Learning Speed Algorithm 5: Special Operations"
This book lists the addition, subtraction, multiplication, and division of decimals and fractions, as well as the square calculation of integers, which can be regarded as a comprehensive exercise. Decimals and fractions are derived from integers. So when calculating, they are first transformed into integers and then addition, subtraction, multiplication, and division are performed. The square of an integer. In essence, it is still multiplication calculation. Similarly, transformation thinking needs to be used to transform it into addition calculation.

Youbo (pen name)

Youbo (pen name), a doctor of science from the Chinese Academy of Sciences and a well-known knowledge blogger. The cumulative reading volume of his works across the entire network exceeds ten million. He advocates finding mathematics in life and enjoying life while learning. He is a doctor father who leads children to explore the wonders of mathematics, contemplate its mysteries, and discover its beauty.

When it comes to mathematics, what's your first impression? Natural numbers, polynomials, parallel lines, functions... Thinking of these, do you feel overwhelmed?

The reason why you think mathematics is difficult may be that you haven't mastered the correct method!

In fact, mathematics is a powerful tool. On a large scale, when a space station enters the universe, it needs to use mathematics to calculate orbital speed; for satellite positioning and navigation, it needs to use mathematics to calculate position coordinates. On a smaller scale, when checking out at the supermarket, it needs to use mathematics to calculate the quantity and total price; when participating in a spring outing activity, it needs to use mathematics to calculate the number of people and expenses...

In short, in the history of human development, mathematics has played an indispensable role.

Since mathematics is so important, is there any way to easily master it?

Of course there is! In learning mathematics, the most important thing is not to memorize formulas and algorithms, but to master the way of thinking behind mathematics, such as splitting, rounding up, exchanging, and eliminating. The first volume of "One Minute Comics: Speedy Calculation Methods for Straight-A Students", "Basic Speedy Calculation", extracts various mathematical thinking methods such as exchanging and rounding up, splitting and rounding up, and splitting and eliminating from the most basic one-digit addition and subtraction and two-digit addition and subtraction, helping you master the quick calculation methods of addition and subtraction.

"Basic Speedy Calculation" can enable you to calculate quickly and accurately. Most importantly, it can calculate cleverly. Only by mastering ingenious ways of thinking can you draw inferences from one instance and then generate creative thinking.