The whole process of (63 + x) × 13 = 1573

The whole process of (63 + x) × 13 = 1573

13x63 + 13X = 1573 819 + 13X = 1573 13X = 1573-819 13X = 754 x = 754 divided by 13 x = 58

English translation
(afternoon) we visited Dr. Sun Yat-sen's Mausoleum, which was built in honor of Mr. Sun Zhongshan. On the second day, we went to Wuxi and Suzhou. Suzhou is an ancient and beautiful city. We ended up traveling on the Oriental Pearl to enjoy the beautiful night scene of Shanghai. I often love this trip and I will never forget it.

:first we go to Nanjing by plane.This is my first time to travel by air,let me very excited.The morning we arrived at Nanjing,the afternoon went to visit Dr.Sun Yat-sen's Mausoleum,which was built in memory of Mr.Sun Zhongshan.The very next day we went to Wuxi and Suzhou, Suzhou is a beautiful old city.We stood in the appreciation of the beautiful landscape of Shanghai,as the end of our journey.I very like this trip,will never forget it.

A rope is folded in half for 5 times in a row. Use scissors to cut the rope along the middle after 5 times of folding. How many sections of the rope are there at this time?

The rule is this: fold once, 2 * 1 + 1 = 3 segments
Twice: 2 * 2 * 2 + 1 = 9
……
5 times: 2 * 2 * 2 * 2 + 1 = 33
I've done this problem. That's how I did it~

There is a cuboid container, 60 cm long, 40 cm wide, 30 cm high, and 28 cm deep
Put a 20 cm cube iron into the container, will the water overflow? How much?

The remaining volume of cuboid container = 60 * 40 * (30-28) = 4800 cm3
Volume of cube iron = 20 * 20 * 20 = 8000 cubic centimeter
So the water will overflow
So when the iron is put into the container, the volume of water to overflow is 8000-4800 = 3200 cubic centimeters

-0.85 × 17:8-18 × 7:2 + (18 △ 9:7-17:9 × 0.85) formula

-8 of 0.85 × 17-2 of 18 × 7 + (7 of 18 △ 9-9 of 17 × 0.85)
=-17/20x8/17-18x2/7+18x9/7-9/17x17/20
=-17/20x(8/17+9/17)+18x(9/7-2/7)
=-17/20x1+18x1
=18-0.85
=17.15

As long as the formula does not process and calculation~
1. In the process of culture, a certain bacterium divides every half an hour (one cell divides into two cells). After 4 hours, how many cells can this bacterium reproduce from one cell?
2. There are 108 days with good air quality in a city this year. It is planned to increase the number of days with good air quality to 240 days in the next year. If the percentage of days with good air quality in each year is the same as that in the previous year, what is the percentage?

(1) The eighth power of 2
(2) 108 (1 + x) square = 240

There are 440 science and technology books in the library, 12% less than literature and art books, and 5% more than story books. What does 440 * 5% mean?

400 * 5% means how much more story books are than science and technology books. Because the unit 1 is after the comparison word, multiplication is used. If the story book is 440 * (1 + 5%), the story book is 440 / (1-12%). Because literature and art books are unit 1, division is used

1. Party A and Party B set out at the same place on the highway at the same time and advance along the highway. The speed of Party A and Party B is 80 m | min and 70 m | min respectively. Find the distance between them in 15 minutes
The bus and the train leave 100 kilometers away from a and B at the same time, and they run in opposite directions. The first meeting point is 40 kilometers away from a station. After the meeting, the two cars still advance at the same speed. When they arrive at each other's starting place, they both return immediately. How far is the second meeting point from B?
Answer in three minutes,

Fifteen minutes later, the distance between them was 150m
The second meeting point of the two vehicles is 20km away from the ground B

How long does it take to walk 1000 meters

Walk slowly for about 20 minutes
Normal for about 15 minutes
About five minutes

Chinese reading questions for Grade Seven

Kite
(1)
One day, it suddenly occurred to me that I didn't see him very much, but I remember seeing him picking up dead bamboo in the backyard. Suddenly, I realized it. I ran to a hut where few people were going, and opened the door. As expected, I saw him in the dusty pile of things. He sat down on the stool and stood up in panic, Beside the stool, there is a bamboo skeleton of a butterfly kite, which has not yet been pasted with paper. On the stool, there are a pair of small wind wheels for eyes, which are decorated with red paper. They are about to be finished. I am satisfied with breaking the secret, and I am very angry that he has concealed my eyes, so I am painstakingly trying to steal a worthless child's play, He threw the wind wheel on the ground and crushed it. He couldn't beat me in terms of age and strength. Of course, I got a complete victory, so I walked out and left him standing in the hut in despair. Later, I didn't know how he was, and I didn't pay attention
However, it was my turn to punish. After a long time of parting, I was middle-aged. Unfortunately, I occasionally read a foreign book on children, and I learned that games are the most legitimate behavior of children, and toys are children's angels. Therefore, the scene of spiritual abuse in my childhood, which I have never remembered in the past 20 years, suddenly unfolded in front of my eyes, and my heart seemed to change at the same time, I fell down heavily
1. Explain the following words and punctuate them
① A sudden realization ()__________________________________________
② Painstaking efforts ()__________________________________________
2. Extract key words from the text and fill in the table below
The details of the characters describe the inner activities
Little brother
"Me"
3. Can we change "throw the wind wheel underground again and step flat" to "throw the wind wheel underground again and step flat"?
_______________________________________________________________
4. Please summarize the content of the first paragraph in simple language. And what scene does "the scene of spiritual torture" refer to?
_______________________________________________________________
5. Why does the author try every means to prevent the little brother from flying a kite? Why is it later called "spiritual sadism"?
_______________________________________________________________
6. What kind of valuable qualities does the little brother have when he makes his own exquisite kites?
_______________________________________________________________
7. After reading a foreign book on children at the end of the century, why is it "unfortunate"?
_______________________________________________________________
_______________________________________________________________
8. What kind of children's image does the author draw for us in these two paragraphs?
_______________________________________________________________
9. Wipe out a sentence about the main idea of the article
_______________________________________________________________
10. What rhetorical devices are used in drawing line sentences? What are their functions?
_______________________________________________________________
11. Can we replace the "unfortunate" with "lucky" and why?
_______________________________________________________________