Binary linear equations have not been learned yet. But that was in the elementary school Olympics.
Quadratic equation, I haven't learned it.
Primary school knowledge, mainly including
1. Basic knowledge of integers, decimals, fractions and percentages, negative numbers, ratios and proportions, and equations. Can skillfully perform four operations of integer, decimal and fraction, can estimate the addition, subtraction, multiplication and division of integer and decimal, and can use the simple algorithm learned to calculate reasonably and flexibly; Can solve the equations I have learned.
2. Knowledge of commonly used units of measurement, grasp the progress between the units studied, and simply rewrite and convert.
3. Features of geometric shapes; Skillfully calculate the perimeter, area and volume of some geometric shapes and apply them; Simple drawing, measurement and other skills; Understanding the axisymmetric figure will draw the symmetry axis of the figure and understand the translation and rotation of the figure; The position of an object can be determined by several pairs or according to the direction and distance, and the knowledge of proportion can be mastered and applied.
4. Preliminary knowledge of statistics, able to read and draw simple statistical charts, make simple judgments and predictions according to the data, find out the possibility of some simple events, and solve some practical problems in calculating the average.