Ⅰ Numbers and Operations
01 Large numbers
02 Multiplication and Division
4th Grade Unit Summary ①
03 Addition and subtraction of fractions (1)
04 Addition and subtraction of decimals
4th Grade Unit Summary ②
05 Mixed calculations of natural numbers
06 Divisors and Multiples
07 Reduction and common denominator
5th Grade Unit Summary ①
08 Addition and Subtraction of Fractions (2)
09 Multiplication of Fractions
10 Multiplication of Decimals
5th Grade Unit Summary ②
Division of 11 fractions (1)
Division of 12 decimals (2)
6th Grade Unit Summary ①
Division of 13 fractions (2)
14 Division of Decimals (2)
6th Grade Unit Summary ②

Ⅱ Figure
15 Moving plane figures
16 triangles
17 squares
18 polygons
4th Grade Unit Summary
19 Congruence and Symmetry
20 rectangular solids
5th Grade Unit Summary
21 Pyramids and pyramids
22 Space and Volume
23 Cylinder, cone, sphere
6th Grade Unit Summary

Ⅲ Measurement
24 angles
4th Grade Unit Summary
25 Perimeter and Area of ​​Polygons
26 Range and Estimation of Numbers
5th Grade Unit Summary
27 Volume and surface area of ​​a rectangular solid
Area of ​​28 circles
6th Grade Unit Summary

Ⅳ Regularity
Finding Rule 29
4th Grade Unit Summary
30 Rules and Responses
5th Grade Unit Summary
31 Ratio and ratio
32 Proportionality and Proportional Distribution
6th Grade Unit Summary

V Data and Possibilities
33 Bar Graph
34 Broken line graph
4th Grade Unit Summary
35 Average and Probability
5th Grade Unit Summary
36 Various graphs
6th Grade Unit Summary

Ⅵ Elementary and secondary school linked intensive learning
1 Properties of isosceles triangles
2 Vertical and perpendicular lines
3 parallel lines
4 isosceles trapezoids
5 parallelograms
6 rhombuses
7 Rectangles and Squares
8 polygons
9 diagonal
10 The sum of the interior angles of a polygon
11 Bar graph/histogram
12 Area of ​​parallelograms and triangles
13 Greatest Common Divisor
14 Least Common Multiple
15 Size Comparison
16 Joint
17 and above and below, over and below
18 Correspondence/Proportional and Inverse Proportionality
19 average
20 Possibilities/Probabilities
21 Mixed calculations
22 polyhedrons
23 Volume and surface area of ​​each prism
24 Volume and surface area of ​​a cylinder
25 Rotor
26 Pi/Circumference and area of ​​a circle
27 Pictogram/Stem and Leaf Plot
28 Distribution table of relative frequencies

『Summary of Elementary Math Concepts』 organizes the core essential concepts of elementary school textbooks in order by learning system by area, allowing you to master the entire elementary school curriculum in a short period of time.
It can be used as a preview textbook for elementary school students and as a review textbook for middle school students. It can also help eliminate fear of middle school math through middle school basic problems linked to elementary school concepts.


- Quickly and completely organize elementary math through essential concept organization and concept replenishment problems.
- Improve problem-solving skills and solidify your skills through important core problems by concept, such as calculation and type problems.
- You will be able to write and answer your own solution process through descriptive questions that describe the solution steps in detail.

- You can review and finalize what you have studied through the unit summary questions for each grade level by area.
- Through elementary and middle school linked intensive learning, you can examine how the same concepts are learned in elementary and middle school.

The concepts of the entire elementary mathematics curriculum can be divided into five areas (numbers and operations, shapes, measurement, regularity, data and possibility) and studied systematically.
"A Complete Summary of Elementary Math Concepts with Hydropower Charging" will be helpful to students who want to quickly organize elementary math concepts before entering middle school, students who want to study only the areas they are lacking or want to supplement from what they learned in previous grades, and students who want to learn naturally and preview by following the learning flow linked by area.