Fraction: It's not that difficult. Just be careful when you do the mixing operation. Remember to check the fractional equation. As long as the factorization foundation is solid, this chapter is simple.
Inverse proportional function: not difficult. The most difficult thing in this chapter is that the linear function and the inverse proportional function are drawn in a coordinate system. When x (abscissa) is what, the linear function is greater than the inverse proportional function. There are generally two plates.
Pythagorean Theorem: This is more difficult. The problem is the shortest distance (on a three-dimensional map). For example, it is more difficult to find the shortest distance A-B on a cuboid, and then connect it with A-B after the cuboid is unfolded, which involves the root sign.
Quadrilateral: Reasoning ability is as simple as that.
Data: distributed
I wish you a happy study! Pure hands,