Can you tell me about the difference and calculation of currency depreciation rate and inflation rate? For example, the original ratio of RMB to us dollar was 8:1. Later, the exchange rate of RMB to us dollar depreciated by 20%. How should the formula be listed? If it is an appreciation of 20%, and if it is an appreciation or depreciation of US dollar to RMB, how should the formula be calculated? The reward can be added

Can you tell me about the difference and calculation of currency depreciation rate and inflation rate? For example, the original ratio of RMB to us dollar was 8:1. Later, the exchange rate of RMB to us dollar depreciated by 20%. How should the formula be listed? If it is an appreciation of 20%, and if it is an appreciation or depreciation of US dollar to RMB, how should the formula be calculated? The reward can be added

The rate of currency devaluation divides the amount of money that should have flowed in the market by the amount of money now issued, while inflation is the total value of goods flowing in the market divided by the means of circulation

What is the essence of paper money?

The essence of paper money is the general equivalent
Because: paper money is a currency symbol issued by the state and used compulsorily. Money is a commodity separated from commodities and serves as a general equivalent. The essence of money is a general equivalent. Since paper money is a currency symbol and can replace money to perform the function of circulation means, the essence of paper money is a general equivalent

Senior one politics (about paper money)
Which of the following views on paper money are right, if not, why
1. Paper money is a kind of value symbol. It is not a commodity and has no value
2. The state can determine the issue, face value, and purchasing power of paper money
3. The circulation of paper money must be limited by the amount of money needed in circulation
PS: only one of them should be right

1. Right. Page 8 of economic life: paper money is a value symbol issued by the state (or some regions) and used compulsorily. Compared with the value (such as 100 yuan), its value is negligible, so it is considered to be worthless
2. Wrong. The country can not determine the purchasing power of banknotes. If the demand for money is 10 billion yuan and the issued banknotes are 20 billion yuan (and circulated once), then one yuan banknote is only equivalent to the purchasing power of 0.5 yuan
3. Yes. More issues cause price rise; less issues cause sales difficulties

About notes
Paper money is made by_______________ Issued (or in some regions) for compulsory use_______ Symbol. The circulation of paper money must be in_____________________________ For the limit. Write the empty one,

Paper money is a compulsory value symbol issued by a country (or some regions). The circulation of paper money must be limited by the amount of money needed in circulation
In fact, you can buy a political guidance book. This is what I wrote in my guidance book. I hope it can help you!

The following question was put forward by Oakley, a famous scholar of Harvard University
A. B two ferries travel back and forth between a and B sides of a river. They start from both sides of the river at the same time and meet for the first time 700 meters away from a bank. Then they continue to advance at the previous speed until they reach the other bank. After reaching the other bank, the two ferries immediately return and meet for the second time 400 meters away from B Bank. How wide is the river?

A. B two ferries travel back and forth between a and B sides of a river. They start from both sides of the river at the same time and meet for the first time 700 meters away from a bank. Then they continue to advance at the previous speed until they reach the other bank. After reaching the other bank, the two ferries immediately return and meet for the second time 400 meters away from B Bank. How wide is the river?
700 * 3-400 = 1700m

Decimals in life (grade 3 of primary school)

I can't eat a steamed bread, I only ate half. I ate 0.5 steamed bread
Chinese New Year adults drink beer, my father drank 2.5 bottles. That is two and a half bottles
My step is relatively small, 100 steps only 30 meters, so my step is 0.3 meters
He's very fat. He weighs 20.5kg. I'm only 18.3kg

Xiao Hong is the monitor of the class. There are 32 students in her class. During the holidays, she needs to inform all the students to come to school by phone. Please help her to set up a plan and inform each student in the shortest time. If the call time is 1 minute, how long will it take to talk about your plan?

Everyone who gets the call keeps telling the unknown
one
1*2
1*2*2
...
1 (monitor) + 1 + 2 + 4 + 8 + 16 = 32
Five minutes

What is the decimal data in daily life? And write the meaning of decimal

Don't you use it when checking your eyesight? The best eyesight is 1.5 and the worst is 0.1

What are the practical problems and oral arithmetic that are not in the fourth grade math books

Oral arithmetic questions 2 / 1 × 2 / 1 = 4,3 / 1 × 3 / 1 = 6,4 / 1 × 4 / 1 = 8,5 / 1 × 5 / 1 = 10,6 / 1 × 6 / 1 = 12,7 / 1 × 7 / 1 = 14,
8 / 1 × 8 / 1 = 16, 9 / 1 × 9 / 1 = 18, 10 / 1 × 10 / 1 = 20, and so on
There are 44 students in class 1, grade 6, and 2 / 11 of the students take part in the chorus?
2. A duck weighs 3 kg, and a chicken weighs 2 / 3 of a duck. How many kg does this chicken weigh?
3. The price of a volleyball is 60 yuan. The price of basketball is 5 / 6 of that of volleyball. How much is the price of basketball?
There are 18 yuan in Xiaoliang's savings box. Xiaohua's savings are 5 / 6 of Xiaoliang's. Xiaoxin's savings are 2 / 3 of Xiaohua's. how many yuan has Xiaoxin saved?
5. Xiaohong has 36 stamps. Xiaoxin's stamp is 5 / 6 of Xiaohong's. Xiaoming's stamp is 4 / 3 of Xiaoxin's. how many stamps does Xiaoming have?
6. The incubation period of goose is 30 days, duck is 14 / 15 of goose, chicken is 3 / 4 of duck?
7. Three students jump rope, Xiaoming jump 120 times, Xiaoqiang jump is Xiaoming jump 5 / 8, Xiaoliang jump is Xiaoqiang jump 2 / 3?
8. The sixth grade students collected 180 cans, of which 1 / 3 were collected by class one and 2 / 5 were collected by class two. How many cans were collected by each class?
9. Xiaoxiong runs 3 kilometers, 5 / 6 of Xiaoxiong is equal to Xiaogang. Xiaoyong runs 4 / 5 of Xiaoxiong. How many kilometers do Xiaogang and Xiaoyong run?
10. Xiaohong weighs 42 kg, Xiaoyun weighs 40 kg, and Xiaoxin weighs 1 / 2 of the total weight of Xiaohong and Xiaoyun?
11. Three classes of sixth grade students help the library mend books. Class one mends 54 books, class two mends 5 / 6 of class one, and class three mends 4 / 3 of class two. How many books do class three mend?
1. A bucket of water, using 3 / 4 of it, uses 15 kg. How many kg does this bucket of water weigh?
2. Wang Xin bought a book and a pen. The price of the book is 4 yuan, which is exactly 2 / 5 of the price of the pen. How much is the price of the pen?
3. The fastest speed of a car is 140 kilometers per hour, equivalent to 1 / 15 of the speed of a supersonic plane. How many kilometers per hour does this supersonic plane fly?
4. There is a 4 hectare orchard. Apple trees account for 3 / 4 of the orchard area. How many hectares do apple trees cover?
5. There is a 3 hectare apple tree in the school, which accounts for 3 / 4 of the total area of the orchard. What is the total area of the orchard?
6. Xiaoli has 12 more color pictures than Xiaolan, which is just 3 / 10 of Xiaolan's pictures. How many color pictures does Xiaolan have? How many color pictures does Xiaoli have?
7. A shampoo, 450 grams per large bottle, 125 grams per small bottle. How many times is the big bottle? What's the small bottle?
Copy the title first

Need fourth grade math problems, no answers