1.
Addition and subtraction of fractions

(1) (Proper fraction) + (Proper fraction) with a sum less than 1 and the same denominator
(2) (Proper fraction) + (Proper fraction) with a sum greater than 1 and the same denominator
(3) A mixed number with a sum less than 1 and the same denominator (mixed number) + (mixed number)
(4) A mixed number with a sum greater than 1 and the same denominator as the fraction + (mixed number)
(5) (mixed number) + (improper fraction) with the same denominator
(6) Proper fractions with the same denominator - (Proper fraction)
(7) Fractions that can be subtracted and have the same denominator (mixed fraction)-(mixed fraction)
(8) 1-(proper fraction)
(9) (natural number)-(fraction)
(10) Fractional parts cannot be subtracted and have the same denominator (mixed fraction)-(mixed fraction)
(11) (Improper fraction) with same denominator

2.
triangle

(1) Isosceles triangle, equilateral triangle
(2) Properties of isosceles triangles
(3) Properties of equilateral triangles
(4) Acute triangle, obtuse triangle

3.
Addition and subtraction of decimals

(1) Two decimal places
(2) Three decimal places
(3) Comparison of minority sizes
(4) Relationships between minorities
(5) Addition of single-digit decimal numbers without carry
(6) Addition of two-digit decimal numbers without carry
(7) Addition of single-digit decimal numbers with carry
(8) Addition of two-digit decimal numbers with carry
(9) Addition of decimals with different digits
(10) Subtraction of single-digit decimal numbers without borrowing
(11) Subtraction of two-digit decimal numbers without borrowing
(12) Subtraction of single-digit decimal numbers with borrowing
(13) Subtraction of two-digit decimal numbers with borrowing
(14) Subtraction of decimals with different digits

4.
quadrangle

(1) Vertical
(2) Parallel
(3) Trapezoid
(4) Parallelogram
(5) Rhombus

5.
broken line graph

(1) Broken line graph
(2) What can be seen from the broken line graph
(3) Display as a broken line graph

6.
polygon

(1) Polygon
(2) Regular polygon
(3) Diagonal

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