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What is the concept of mathematics in the fifth grade?
The mathematical concepts in the second volume of the fifth grade are as follows:

1, Chapter 1: Rational Numbers.

2. Chapter 2: Addition and subtraction of algebraic expressions.

3. Chapter 3: One-dimensional linear equation.

4. Chapter 4: A preliminary understanding of graphics.

5. Chapter 5: Intersection and bisection.

6. Chapter 6: Plane Cartesian Coordinate System.

7. Chapter 7: Triangle.

8. Chapter 8: Binary linear equations.

9. Chapter 9: Inequalities and Unequal Groups.

10, Chapter 10: Collection, collation and description of data.