The daily math homework is too long, delaying other subjects, and I have not learned math well

In fact, I personally think that mathematics mainly needs to be summarized and inducted, maybe you generally just do problems, through the sea of questions tactics to improve yourself, such efficiency is very low, you try to summarize the chapters in mathematics, such as the proportion, the difference in the number series will be used which formulas and methods, and remember it, so that by doing some representative problems to deepen the memory should be better.

In short, high school is really tiring, and you have to keep going.

To learn science, you must understand its principles, rote memorization is not the way, and there will be no exactly the same questions in the college entrance examination, only the same question type. So take out the previous book and take a look, although the principle is very boring, but if you understand it, it will be obvious to improve your current dilemma, not that you don't work hard, but you don't understand it at all, so your first task is to understand the principle.

Don't take math too seriously, learn to play, but she is usually tired of learning other things, so she should be a flavoring.

Don't think that math is difficult, in fact, when you feel difficult, congratulations, you have stood on this threshold, as long as you step over it, you will feel suddenly enlightened, the process is very painful, and the result is very beautiful. The foundation is important, and the method is even more important. None of them can be discarded.

If there is something here that you have learned that you didn't know before, then turn back and look at it, and then you will find that what you didn't know before is actually quite simple. Don't move forward blindly, but don't stand still. If you have a headache, you can try to take a few steps, but don't forget to go back to what you learned.

You can do some thematic questions and do them in a targeted manner. Look at the question first, don't start writing first, and if you think you do it, you will list a formula, and you won't do h key points for the type of question, and practice more.

Summary. Then look at the blank, the blank is actually a right triangle, and the area of the blank can be calculated with the area formula.

Okay, dear. Question 1.

I don't know how to write the first few questions.

You can check the rest for me.

Okay ha. This is to calculate the area used first.

Then look at the blank, the blank is actually a right triangle, and the area of the blank can be calculated with the area formula.

Then subtract the blank area from the total area to calculate the shadow area.

Are the second and third questions correct?

I'll take a look at it for you.

The second question is right.

The third question, your formula is right, if you are not wrong, it is right<> uh-huh. That's right.

That's a semicircle.

It's not allowed here.

Poor student method: copy someone else's. You can let the friends do the questions separately, and then copy each other.

Good student method: Try to finish other homework first during class time, and write difficult and tedious homework and math homework slowly at home. Definitely:

Write what you will write first, and leave what you won't to see the answer is not cheating, just remember to get stuck in your push-down type of question, and mark it with a strong point! You can take a photo and save it.,Sort out these people who don't know yourself and sort out a special problem for yourself.,This time you copied the answer.,Next time try to make it as much as possible This is your purpose.。 It is easier to use the method of "empirical memory" to make it easier for most liberal arts students to use the method of "empirical memory" to make it easier (I was born with a brain, blame me?).

Then when you encounter English and text recitation, try to insist on getting up in the morning, English is by persistence, although no matter how high your score is, you can't ......communicate with foreignersThe recitation of political history is placed before the exam and ...... the special attack on vacation

Written at the end: When I was a child, I was a very bad person in culture classes, because I always copied other people's books. But I know that good students do that.,I hope it helps you.,Bad students aren't the same as bad people.,Everyone is here to survive.,I have a skill.,My current job is a game artist.,Work and life are good.。

But even so, if it was better than the number of words, I would have been able to go to Tenmei or Chuanmei. You are a sophomore in high school, I suggest that you think more about what industry you want to engage in in the future, which is actually very important, don't choose the unpopular in the society, don't be opportunistic for the sake of the key points, and the final losses are all your own. Even if you go to a slightly worse school, but the major is strong, you come out of that school to engage in the major is popular, the society is to recognize the school major, followed by the book, which can be said to be the gold content of the book.

Many people think that they will wait until they apply for the exam to choose a major, hehe. Ten years of trees, a hundred years of people, what you want to do, you have to plan early.

However, after that, be sure to ask your classmates or teachers why you can't. Find out the knowledge points examined in this question. Seriously** the solution to the same problem in the future.

I think it's better. In fact, you don't have to worry too much, the college entrance examination mainly examines the basic knowledge points, and you can master the things that need to be mastered.

Be patient, be patient! Take more time to figure out the basic knowledge points, so that you can adapt to all changes with no change.

Do your homework at the same time, do what you know first, and then do what you can't.

I won't put it down first and write down a question!

Elephant: 6 tons.

Blue whale: 14 tons.

Hello, this problem can be solved with a column equation. First, assuming that an elephant weighs x tons, a cow weighs y tons, and a blue whale weighs z tons, the following equation is obtained:

x+5y=10

2x+5y=16

x+z=20

The solution: x=6, y=, z=14

1 elephant + 5 cattle = 10 tons.

2 elephants + 5 cattle = 16 tons.

1 elephant + 1 blue whale = 20 tons. One elephant = 6 tons.

Substitution of a blue whale = 14 tons.

I don't think it's pretty, dear

1 elephant = [6] tons.

1 blue whale = [14] tons.

1 elephant + 5 cattle = 10 tons (1).

2 elephants + 5 cattle = 16 tons (2).

1 elephant + 1 blue whale = 20 tons (3).

2) - (1) - > 1 elephant = 16 tons - 10 tons = 6 tons (3) 1 blue whale = 20 tons - 1 elephant = 20 tons - 6 tons = 14 tons.

Weight of 1 elephant: 16-10 6 (tons).

Weight of 1 blue whale: 20-6 14 (tons).

This question is actually very simple, as long as one elephant is equal to ten tons minus five cows, and two elephants are equal to 16 tons minus five cows, indicating that an elephant weighs six tons and a blue whale weighs 14 tons.

Weight of 1 elephant: 16-10 6 (tons).

The weight of 1 blue whale: 20-6 14 (tons) to find the score

1 elephant is 6 tons. 16-10=6

A blue whale is 14 tons.

Subtracting the first equation from the second equation gives that an elephant is equal to 6 tons, and then a blue whale is equal to 14 tons.

1 elephant = 6 tons, 1 blue whale = 14 tons.

16 minus 10 equals 6 tons (1 elephant weight).

20 minus 6 equals 14 tons (1 blue whale weight).

An elephant is 6 tons and a blue whale is 14 tons.

Find the elephant: 16-10 = 6 (tons).

Seek the blue whale: 20-6 = 14 (tons).

One elephant is 6 tons.

A blue whale is 14 tons.

120 40 = 3 blocks.

80 40 = 2 blocks.

3x2 = 6 blocks.

A, you can cut at least 6 pieces.

Hello, math problems mainly rely on practice, but it is very important for the teacher to explain in class, and practice after class is very important.

Question 4.

Answer okay, I'll show you, what you wrote is right, wait a minute, hello, now we know that 10,000 is 3, the single digit is 8, the single digit is 2 times the ten, the ten digit is 4, the lowest three digits are a, ten, hundred, the sum is 18, then the hundred is 6, the highest three digits are 10,000, thousand, hundred, the sum is 18, so the thousand is 9, so after the above analysis, this five-digit number is 39648 more 8

81(x+y)²-121(m+n)²

9(x+y)]²11(m+n)]²=(9x+9y)²-11m+11n)²

(9x+9y)+(11m+11n)][9x+9y)-(11m+11n)]

9x+9y+11m+11n)(9x+9y-11m-11n)(x²+y²)²x²y²

x²+y²+xy)(x²+y²-xy)(2m-n)²-3m+2n)²

(2m-n)+(3m+2n)][2m-n)-(3m+2n)]=(2m-n+3m+2n)(2m-n-3m-2n)=-(5m+n)(m+3n)

The square difference of two consecutive odd numbers is a multiple of 8.

2k+3)²-2k+1)²

(2k+3)+(2k+1)][2k+3)-(2k+1)]=2(4k+4)

8(k+1)

So it's a multiple of 8.

1.Angular dam=

2.Intercept ac=a on am

3.Parallel line cn over c for ad

4.Intercept CB on the straight line L so that CB=B

then ABCD is the parallelogram sought.

First make a ray AM, cut the line segment AC on the AM so that the line segment AC=A, and then make NAC (as the other side of the angle) so that NAC= intercept the line segment AD=B on the ray AN

Make ndp= (dp is on the same side as am on an.

Take the line segment db=a on the ray dp

Connect ......I'm sorry to give up if I read it wrong.

<> the middle section of the figure sells Zen burning or.

<> Tuzhi didn't answer, Sakura Hui was bored.

tons 5000 kg.

650 7 = 4550 (kg).

5000 kg 4550 kg.

A: That's enough for a week.

680 (yuan).

A: Mom spent a total of 680 yuan on gifts.