Wednesday, 26 November 2014
REVIEW OF THE BOOK “EASY WAYS FOR PERFORMING ARITHMETIC COMPUTATIONS”
“EASY WAYS FOR PERFORMING ARITHMETIC COMPUTATIONS” is a book written by Bagiliko John, an undergraduate student of the University for Development Studies (UDS), offering BSc. Pure Mathematics. He is currently in Level 200. He is currently researching on why most people do not like mathematics. He believes that through his effort, the depending perception of most people that mathematics or arithmetic is difficult will be eradicated.
In the book, he presents easy ways, more or less simple tricks that can be used in performing some arithmetic computations. Why his choice of this topic? He aims at proving to people that arithmetic computations can be done in a very easy and interesting way, contrary to what they think about it. What is his definition for arithmetic? He defines arithmetic as the basic tool to mathematics. He gives a scenario in the introduction; when a baby is born, a point is reached where it learns to walk. It does this by first crawling. This crawling he says can be likened to arithmetic. The walking itself is mathematics.
The book is presented in a way that will arouse the interest of the reader to learn arithmetic. For example, 11 × 35 can be computed by placing the 3 and 5 as 3….5. The 3 and 5 are again added and placed in between 3….5. This becomes 385. This is very amazing and confirms that arithmetic computation can be very interesting. In the book, there are many of these which will help the reader to know how to compute similar ones. The book also presents to the reader various simple tricks to be used in computing many arithmetic questions.
Someone might have concluded that then the book is for basic school children. No, the book is for everybody, whether a worker or a student of any level. Arithmetic is actually needed in our daily activities. Sometimes we go to buy many things in a shop at a go. With strong knowledge of arithmetic computations, we will be able to compute the total amount to be paid within some few seconds. This book explains to the reader how to do that without thinking there is magic involved.
What will the reader be able to do after reading this book? The author presents the book such that after the reader has gone through it, he or she should be able to perform the following:
I. Multiply a double digit number by eleven.
II. Multiply a number by 10, 100, 1000 and so on.
III. Multiply a number by 5
IV. Multiply two numbers ranging from 10 to 19
V. Find the square of any number ending with a 5.
VI. Divide a number by 10, 100, 1000 and so on.
VII. Divide a number by 5
VIII. Multiply numbers ranging from 1 to 10 by 9 using an amazing fact.
These are all things the reader will be able to do without the use of a calculator. The reader is also expected to practice these things well to be able give out answers to any of those computations within a few seconds. The book is actually a must read since we all need arithmetic in our daily activities.
The book appears to concentrate on multiplication and division for now. More will come from the author as time goes on. He will revise this current book by adding more to the content.