1.
How much?
Special Edition: Shape Changing Special Practice

2.
Fraction Decimal Percentage

3.
Application in real life

A book that explains fractions and decimals from the perspective of ratios!
Just as memorizing multiplication tables will make multiplication faster,
A book that helps you calculate ratios using the relationships between fractions, decimals, and percentages!
A book that solves ratio problems that frequently appear in real life!

1.
Fractions, decimals, and percentages are different expressions of the same thing!
In mathematics, there is only one correct answer, but there are many ways to express it.
For example, the number 123 can be expressed as one hundred, two twelves, and three ones.
It can also be expressed as a number with 12 digits and 3 digits.
In mathematics, there are times when the same thing can be expressed in several ways.
As students advance in grade level, they use various expressions to calculate complex equations and solve problems by finding the contents of invisible parts.
Even in elementary school, there are areas where we need ample practice expressing the same thing in different ways: fractions, decimals, and percentages.
'Half' is expressed in different ways: 1/2 as a fraction, 0.5 as a decimal, and 50% as a percentage.
In this book, you will practice expressing the same thing as a fraction, decimal, and percentage.

2.
Speed ​​up your calculations!
The difference in speed between memorizing multiplication tables and calculating multiplication and calculating without memorizing them is huge.
Even when solving problems involving ratios, memorizing the basics will speed up your calculations.
Speed ​​up your calculations by practicing converting frequently appearing ratios into fractions, decimals, and percentages.
You can practice step by step by looking at the picture, writing it as a fraction, converting it to a decimal, and then converting it back to a percentage.
Practice plenty in the special Shape Changing section.

3.
Change sentences into equations and solve application problems with ease!
Percentages are a frequently used ratio in daily life and are often connected to real-life problems.
In particular, concentration is something that often comes up in percentages.
However, if you try to solve the concentration problem using only formulas without properly understanding it, it becomes a difficult problem.
That's why we need to understand the problem situation and approach it with the basic concept of proportion.

This book provides plenty of practice in concentration problems by presenting salt water, watercolor water, honey water, etc. in the same format.
In addition, the voting rate and discount rate are approached as ratios, so that you can find the desired answer by changing the sentence into an equation rather than using a set formula.


★★★ Great for students like this!
*Friends who are curious about the relationship between fractions, decimals, and percentages
*Friends who have difficulty with ratios
*Friends who want to quickly calculate ratios

★★★ A book that proves that math books can be pretty too!!!
A math book with a pastel-toned layout that resembles a fairy tale has been published, unfolding mathematical concepts through illustrations.
Add fun to your studies with these pretty math books.