How to review math 20 in junior high school

I'm a junior high school student.

Focus on reviewing quadratic functions, inverse proportional functions, circles, similar triangles, and other geometries Probability, projections, you can take a brief look, and you need to memorize formulas such as the area of a cone.

You can buy past exam questions such as Meng Jianping.

You don't have to do the whole sheet to buy the real questions, you can focus on the last question of multiple choice questions, fill-in-the-blank questions, and solution questions, which are generally more difficult and novel.

There is a detailed explanation at the back of the answer, if you don't understand, you can ask the teacher.

You can also ask the teacher to help you find difficult and classic topics in the past.

Focus on reviewing quadratic functions, inverse proportional functions, circles, similar triangles, and other geometries Probability, projections, you can take a brief look, and you need to memorize formulas such as the area of a cone.

You can buy past exam questions such as Meng Jianping.

You don't have to do the whole sheet to buy the real questions, you can focus on the last question of multiple choice questions, fill-in-the-blank questions, and solution questions, which are generally more difficult and novel.

There is a detailed explanation at the back of the answer, if you don't understand, you can ask the teacher.

You can also ask the teacher to help you find difficult and classic topics in the past.

Personally, I think it's useless now, and I think it's important to have a good mindset and not get nervous.

Personally, I think that if you have a computer, you can find high school exam questions from various places over the years on the computer to do.

Is the second one wrong?,That should be 16/3.,That's a fake score.。

That's right, it's just that the steps are complicated.

The second question is wrong, five and a third should be sixteen thirds.

-（+3）=-3

Assignment 4Just put 2 on the number line, and the last question has a set of answers: a=4, b=-4

The rest is correct.

Question 10 should be 72°.

Question 11 should be 50°

The three angles of the 12 questions are 36°, 72°, and 72°

None of the first steps you did were correct, the second step was wrong, 3 2 + 5 4-5 2 + 15 4-5 4 = (-3 2-5 2) + (5 4-5 4) + 15 4 = -4 + 15 4

The actual fraction can be split into two parts: integer and fraction.

Original formula = -1-1 2+1+1 4-2-1 2+3+3 4-1-1 4=(-1+1-2+3-1)+(1 2+1 4-1 2+3 4-1 4).

The area is done wrong, 2 times the root number 50 times the root number 32 should be equal to 80 turn left |Turn right the word a little ugly, don't be surprised - -

Yes, the power of 0 of any number is equal to 1 within the absolute sign, and it is also correct to remove the absolute sign.

If you get this question right, you have to be confident.