DAY 01 Mixed Calculations of Natural Numbers 8
DAY 02 Divisors and Multiples
DAY 03 Common divisors and greatest common divisors
DAY 04 Common Multiples and Least Common Multiples
DAY 05 Drainage Determination Method
DAY 06 Reduction and Common Fraction
DAY 07 Addition and Subtraction of Fractions
DAY 08 Multiplying Fractions
DAY 09 Division of Fractions
DAY 10 Inverse Operation
DAY 11 Properties of Unknowns and Equations
DAY 12 ANGLES AND TRIANGLES
DAY 13 Parallel and Perpendicular
DAY 14 Square
DAY 15 Polygons and Diagonals
DAY 16 Area of ​​a Polygon
DAY 17 Joint
DAY 18 Won
DAY 19 Rectangular Solids and Cubes
DAY 20 Pyramids and Pyramids
DAY 21 Cylinders, cones, and spheres
DAY 22 Ratio, ratio, and percentage
DAY 23 The Nature of Rain
DAY 24 Salt water concentration
DAY 25 Averages and Probabilities
DAY 26 More than and Less than, Excess and Less than

[Friendly Commentary (Book within a Book)]

A comprehensive overview of elementary mathematics, condensed into 26 essential concepts.
(1) Complete elementary mathematics in one volume: All the important mathematical concepts and problem types covered in elementary mathematics are included in one volume, so you can study quickly and without burden.
(2) Strict selection of essential concepts: Mathematical concepts that are not very important or are not frequently used in middle school math are boldly deleted so that you can study without unnecessary details.
(3) Linked study with middle school mathematics: Elementary mathematics is the preliminary stage to middle school mathematics.
It is designed to expand mathematical concepts by covering middle school mathematics that is directly connected to elementary school mathematics.

※ This book is highly recommended to the following students.
5th and 6th graders, 7th graders: "Students who want to quickly review essential elementary math concepts."
Middle school 1st, 2nd, and 3rd graders: "Students who want to review only the core concepts of elementary math, which form the foundation for middle school math."


● Structure and Use of This Book
[Step 0] Summary of essential concepts
We have compared and analyzed all elementary school textbooks to clearly organize the essential concepts.
It is an important mathematical concept, so you should read and understand it repeatedly.
Additionally, we have added abundant 'editing' throughout to make it easier and faster to understand.

[Step 1] Understanding the concept
This is the step to check if you have accurately understood the essential concepts.
We have carefully selected and included basic absolute questions with relatively low difficulty so that you can accurately understand mathematical concepts while solving problems.
If you are having trouble solving a problem, carefully reread the summary of essential concepts and then solve it.

[Step 2] Raising the problem level
If you have a clear understanding of the basic concepts through the Level 1 Concept Understanding Problem, you should review the basic concepts again with a more difficult problem.
You need to practice repetitive operations with more difficult problems to further advance your understanding of the concepts.

[Step 3] Challenge the application problem
If you have a good understanding of the basic concepts through the Level 1 Concept Understanding and Level 2 Problem Level Up problems, you can expand your thinking skills by solving application problems and word problems.

[Middle School Curriculum] Studying Together
It contains middle school math content that is directly connected to elementary school math.
Since elementary school math is just a little further into middle school math, it is effective to study them together.

◆ Introduction of the review team
Cha Ji-hye (Growing With Kim Ji-hyun), Dal-gul-mam (Insta-influencer), Choi Su-jeong (Iru-da Math), Song Tae-won (Song Tae-won 1st Pro Math), Cha Dong-hee (Math Expert Empathy), Jo Haet-bom (Your First-Class Math), Lee Hak-song (Beautiful Mind), Jo In-sang (Im Gi-se Math), Yoo Hong-seok (Grit Edu), Jo Kyung-hee (Grit Edu), Lee Kwon-eom (Mokdong Wiseman), Kim Mi-jeong (First-Class Math), Choi Young-hee (Fun Jin Choi Teacher Math), Joo Seon-mi (Joo Teacher Math), Park Young-hoon (Hoon Learning Coaching), Gil Ji-yeon (Gil Teacher Math), Lee Seon-mi (Incheon Lee Soo Math), Park Young-jin (Daegu Guseon Math), Hwang Young-mi (Osan Ilshin), Kwon Yong-sik (Gwangju YM Math), Yoon Geun-yeong (Speedmath), Song Su-ok (Subi Teacher Banseok Classroom), Jang Yeon-ju (Gyeongsan Baeksan Math), Jang Jeong-hwa (Jjang Lee Ji-soo).
Lee Ji-hyun (math instructor), Shin So-young (SL High Spec), Lim Hye-jeong (Saebit Math), Bing Jin-young (Songdo Marina Bay Solution Math), Lee In-yeol (Changwon Altis), Choi Min-young (Promath Math), Kim Ae-hee (Perfect Math), Choi Gyun-ja (Barosky), Woo Soo-jeong (math instructor), Kang Jeon-mi (One Table Study Math), Seol Seong-hee (Seol Teacher Math), Kwon Hye-ryeong (Sink Teacher Thinking Research Institute), Lim Ji-hye (With Math Study Center), Noh Yun-kyung (Eduflix Managing Director), Lee Yong-min (Gwangju Hansol Math), Kim Bo-ra (Bora Teacher's Integrated Research Institute), Kim Ji-hyun (Class U Math Teacher), Seo Seung-hee (Deep Brain Math), Bae Mina (Iruda Education)