Xiaoshengchu Mathematics Examination Formula 1, Volume and Surface Area
Area of triangle = base × height ÷2. The formula S=a×h÷2.
Area of square = side length × side length formula S=a2
Area of rectangle = length× width Formula S=a×b
Area of parallelogram = base× height Formula S=a×h
Trapezoidal area = (upper bottom+lower bottom) × height ÷2 Formula S=(a+b)h÷2
Sum of internal angles: sum of internal angles of triangle = 180 degrees.
The surface area of a cuboid = (length× width+length× height+width× height )× 2 Formula: S=(a×b+a×c+b×c)×2.
Surface area of cube = side length × side length ×6 Formula: S=6a2.
Cuboid volume = length× width× height formula: V=abh
Volume of cuboid (or cube) = bottom area × height formula: V=abh.
Volume of cube = side length × side length × side length formula: V=a3.
Circumference = diameter × π formula: L=πd=2πr
Area of circle = radius × radius× π formula: S=πr2.
Surface (side) area of cylinder: The surface (side) area of cylinder is equal to the perimeter of bottom multiplied by height. Formula: S=ch=πdh=2πrh.
Surface area of cylinder: the surface area of cylinder is equal to the perimeter of the bottom multiplied by the height plus the area of the circles at both ends. Formula: S=ch+2s=ch+2πr2.
Volume of cylinder: the volume of cylinder is equal to the bottom area multiplied by the height. Formula: V=Sh
Volume of cone = 1/3 bottom× product height. Formula: V= 1/3Sh
The important content of primary school mathematics is 1. Fractional multiplication and division.
Fraction multiplication and division belongs to the basic knowledge and skills of fractions, and they are closely related, so the textbook arranges these two parts together. The textbook first emphasizes the relationship between fractional multiplication and division through a set of questions, that is, fractional division is the inverse operation of fractional multiplication. At the same time, the calculation method of fractional multiplication and division is reviewed.
2. percentage.
The review of percentage content focuses on the application of percentage, which is arranged after solving problems by fractional multiplication and division, so that students can see their consistency in structure and problem-solving ideas and strengthen the connection between knowledge.
3. Space and graphics.
This part includes the review of position and circle.
In the first phase, students have used the first group and the first group to indicate the position of objects. This semester, they will further learn to use number pairs to represent the position of objects. The understanding of the circle includes the concepts of diameter, radius, π, axisymmetric figure, circumference and area of the circle, and drawing of the circle. The textbook focuses on reviewing the formulas for calculating the circumference and area of a circle and axisymmetric graphics.
4. statistics.
The main content of statistics is to know the fan chart. Students can further understand the characteristics of fan-shaped statistical charts, that is, they can clearly show the relationship between the number of each part and the total number, and solve some problems according to the given information, thus promoting students' ability to analyze information and solve problems.
Math learning methods As long as the class time is well grasped, math scores will naturally improve. Never be careless in class. This is very important and you must always keep it in mind.
It is very important that students who study well generally have their own set of wrong questions. In the process of learning, you can copy your own mistakes in the wrong set of mathematics. The purpose of doing this is to be able to check and fill in the gaps, and learning mathematics well is a slow process.