This book, with pictures and texts, teaches us a lot of mathematics knowledge in the form of father-son dialogue and can exercise our logical thinking ability. It also introduces many games: addition boxing, finding out the combination of sum ten and so on. These games are not only interesting, but also fully exercise our reaction ability. This book is easy to understand and easy to understand. It taught me that there are more than just formulas, calculations and figures in mathematics. There are many other interesting things.
In this book, I like one or two chapters or fragments very much. Let me share them with you.
This is a special talk about how to calculate one to one, which is fast and convenient. At first, I didn't quite understand this clip, but he drew a picture on it. I looked at it carefully and immediately understood. The book gives us an example first, what is the sum of one to ten. The sum of the numbers one plus nine, two plus eight, three plus seven and four plus six is 10, add the last ten, and then add the remaining five to get 55. How's it going? Is it simple? Now it is convenient for us to calculate the sum of one to one hundred. Use one to forty-nine plus ninety-nine to fifty-one. Each one adds up to one hundred, and its number is forty-nine, which means there are four thousand nine hundred. Add a 50 and the last 100 to make 5050. The second method: use one plus one hundred, two plus ninety-nine, three plus ninety-eight ... ninety-eight plus three, ninety-nine plus two, one hundred plus one. In this way, a * * * has one hundred and one hundred, so dividing by two is the sum of one to one hundred.
I used to find it difficult, but now I read this book, which is very simple! Very happy _.
Actually, math is not that difficult! After reading this book, I feel that mathematics is much easier. Everyone can understand pictures and texts. I am a logical thinking major. Can everyone have a look? ⊙!