1. There are 300 books on shelf a, two fifths less on shelf B than on shelf A. how many books are less on shelf B than on shelf a? How many books are there on shelf B? There are 20 girls in class 2 of grade 5, and four fifths of girls are boys. How many students are there in this class? 3. A motorcade has to transport 198 tons of goods. It is known that five ninth of the goods have been transported. How many tons are left? 4. The supermarket brought in 750 kg of apples and pears and sold one fifth of them respectively. The competition of the remaining apples and pears was 5:7. How many kg of apples and pears were there at this time? 5. A batch of wood can make 40 desks or 60 chairs. How many sets of desks and chairs can these wood make? (one desk with two chairs) Formula

1. There are 300 books on shelf a, two fifths less on shelf B than on shelf A. how many books are less on shelf B than on shelf a? How many books are there on shelf B? There are 20 girls in class 2 of grade 5, and four fifths of girls are boys. How many students are there in this class? 3. A motorcade has to transport 198 tons of goods. It is known that five ninth of the goods have been transported. How many tons are left? 4. The supermarket brought in 750 kg of apples and pears and sold one fifth of them respectively. The competition of the remaining apples and pears was 5:7. How many kg of apples and pears were there at this time? 5. A batch of wood can make 40 desks or 60 chairs. How many sets of desks and chairs can these wood make? (one desk with two chairs) Formula

1. There are 300 books on shelf a, two fifths less on shelf B than on shelf A. how many books are less on shelf B than on shelf a? How many books are there on shelf B?
300 × two fifths = 120
300-120=180,
There are 20 girls in class 2 of grade 5, and four fifths of girls are boys. How many students are there in this class?
Male: 20 × 4 / 5 = 16
This class: 20 + 16 = 36
3. A motorcade has to transport 198 tons of goods. It is known that five ninth of the goods have been transported. How many tons are left?
198 × 5 / 9 = 110
Remaining; 198-110 = 88
4. The supermarket brought in 750 kg of apples and pears and sold one fifth of them respectively. The competition of the remaining apples and pears was 5:7. How many kg of apples and pears were there at this time?
Total sales: 750 × 1 / 5 = 150
Total remaining: 750-150 = 600
Apple: 600 × 5 / 12 = 250
Pear: 600 × 7 / 12 = 350
5. A batch of wood can make 40 desks or 60 chairs. How many sets of desks and chairs can these wood make? (one desk with two chairs)
40:60 = 2:3, the material for a table is two-thirds of that for a chair,
Let's make x chairs. The table is two-thirds x (60-x)
Then, 2 × two thirds × (60-x) = X
The solution is x = 34 and two seventh
Therefore, the wood can be used to make about 17 sets of desks and chairs

Please help me to do these three English filling in questions Thank you very much.
1:.I strongly objected to (leave) the boy alone at home!2:this article (write) by mr.white marry years ago!3:she is well－knowntor her excellent (achieve) in her career
It's cloze,

1.leaving 2.was written 3.to achieve

Which C + + Master trouble to help me do the following questions
2. Output the number between 500 and 1000 which can't be divided by 7, and output 8 data in one line
3. When a millionaire meets a stranger, the stranger talks to him about a money exchange plan. The plan is as follows: I give you 200000 yuan every day, but you only need to give me two cents on the first day, I still give you 200000 yuan on the second day, you give me four cents, I still give you 200000 yuan on the third day, you give me eight cents The money you give me every day is twice that of the previous day, until the end of one month (30 days). The millionaire is very happy and gladly accepts the contract. Please write a program to calculate how much the stranger gives the millionaire and how much the millionaire gives the stranger in one month
4. Output all prime numbers within 200, and require 8 data to be displayed in one line
5. There is a pile of peaches on the beach, which are divided by five monkeys. The first monkey divides the pile of peaches into five parts, one more, and the monkey throws the other into the sea and takes one. The second monkey equally divides the remaining peaches into five parts, one more, and it throws the other into the sea and takes one more. The third, fourth and fifth monkeys all do the same, How many peaches are there on the beach?

2...
#include
void main()
{
int i,j=0;
for(i=500;i

A number with hundreds of digits is the smallest odd number, a number with percentile is the largest one digit, and the number with other digits in the middle is the largest prime number. This number is written as (), read as (), and rounded to the nearest ten digits, which is about ()

It's 177.79 in writing, 177.79 in reading, and 177.8 in rounding

Fill in the blanks in mathematics volume B
Must be volume B, 15 OK
It's not a general question to fill in the blanks
The best is the Beijing Normal University version

1. In the Olympic Games venue, the number 2 in row 5 can be expressed by (5,2), then (7,4). What is the arithmetic square root of Mao 2 and 81______ ,=________ 3. The positive integer solution of inequality - 4x ≥ - 12 is. 4

Fill in the blanks: a + B + () = 2 of a
2. If X-2 / x-3 and 3x + 2 / 2-x are reciprocal, then the value of X is
3. If the equation x + 3 / M = x + 3 / 1 + 1 has an increasing root, then the increasing root must be
4. If 5x-3y-2 = 0, then the 5x power of 10 is divided by the 3Y power of 10=
5. Answers:
When m is the value, solving the equation x + 1 / 2 + 1-x / 5 = the square of X-1 / m will produce increasing roots
6. Practical questions:
A. B. the distance between the two places is 135 km. Two cars drive from a to B. the big car starts 5 hours earlier than the small car, and the small car arrives 30 minutes later than the big car. It is known that the speed ratio of the small car to the big car is 5:2. Find the speed of the two cars

1. 13 of a-b2.4. X = - 34.1005. Multiply both sides of the equation by (x + 1) (x-1) to get 2x-2-5x-5 = m, that is, x = (M-7) / 3. Because the increasing root is x = 1 or - 1, so (M-7) / 3 = 1 or - 1, the solution is m = 10 or 46

Three math fill in the blanks!
(1)[(log(4)(3)+log(8)(3)][log(3)(2)+log(9)(8)]=
(2) Given that the domain of F (x) is (1 / 2,8), then the domain of F (2 ^ x) is (1 / 2,8)__ .
(3) It is known that f (x) is a function which is not always zero on R, and f (AB) = AF (b) + BF (a) is satisfied for any a, B ∈ R, then the value of F (1) is__ .

1.25/12
2.(-1,3]
three

Solving three mathematical blank filling problems
The results are as follows: 1. The fastest nerve impulse conduction velocity between nerve cells is 400km / h, which is equivalent to () m / s
2. From 0 to 999, there are () numbers divided by 3.4.5
3. Five scores: 2 / 3.5/8.10/17.15/23.12/19. The score in the middle of the row is ()

Question 1: 2500 / 9 per second!
The second question: a total of 16!
Question 3: 12 / 19
If it's right, give me a bonus!

Chinese fill in the blanks, do me a favor!
1: Good deeds, good deeds, good virtues, old virtues, old virtues, fine virtues
2: Idiom pairs
Simple food and tea, lasting forever, in order
Solid as gold, meticulous carving, timely help
3: Write idioms according to the tips
Describe the nonsense and mean words
Describe eloquence describe surprise speechless
Description is not good, words are used

[up] line [down] effect [with] virtue [report] virtue [rely on] old [sell] old [see] fine [know] fine
2: Idiom pairs
A simple meal
Lasting forever
In order [disorder]
Solid as gold
Meticulous [crude]
Send charcoal in the snow
3: Write idioms according to the tips
How to describe nonsense
Describe as mean [sarcastic]
To describe as eloquent
To describe being speechless [tongue tied]
Poor description [clumsy speech]
Description echos [parrots]

Do me a favor
1. Write the words as they are
（1） Floating and leisurely______
（2） Blue blue blue______
2. Write the corresponding words according to the meaning of the words
(1) Cry in a low voice ()
(2) It means jumping and running all the time
(3) Mourn heavily ()
3. Choose the right pronunciation
To the moon

1. Write the words as they are
（1） It's just so so
（2） Blue, blue, blue, blue, blue, blue, blue
2. Write the corresponding words according to the meaning of the words
(1) To cry (SOB) in a low voice
(2) It means jumping and running
(3) Mourn heavily (in memory)
3. Choose the right pronunciation
To the moon
bèn
According to the dictionary,
B ēēēēēēēēēēēēēēēē n means
and
B è n is to go straight, to tend, to do one's best for a certain purpose
obviously,
Rushing to the moon is the next kind