There are 24 more story books than science and technology books, 1 / 4 less science and technology books than story books

The number of story books is 24 / (1 / 4) = 96 because there are 24 more story books than science books and 1 / 4 more story books than science and technology books
Do you understand?

There are 12000 science and technology books, literature and art books and story books in the school library, of which 1 3. The ratio of science and technology books to story books is 2:3. How many story books are there?

From the ratio of science books to story books is 2:3, it can be understood that story books are 3 of science and technology books
2，
12000×1
3×3
2，
=4000×3
2，
=6000 copies
A: there are 6000 story books

The book supermarket sold 458 comic books in June this year, 36 less than twice as many story books. How many story books have been sold?

Suppose that there are x storybooks sold. According to the meaning of the title, the equation can be obtained
2x-36=458
2x=494
x=247
A: 247 storybooks have been sold

Dong Dong's neighbor, Aunt Wang, has a birthday Dong Dong's neighbor, Aunt Wang, had her birthday. When she asked her about her birthday, she said, "when I was as old as you, you were just one year old; when you got to my age, I would be 37 years old." please calculate, how many birthdays does Aunt Wang have?

Let Dongdong be x years old this year and Aunt Wang is y years old now. According to the meaning of the title: Y-X = X-1 y + (x-1) = 37y = 2x-1 2x-1 + X-1 = 37x = 13, then y = 2x-1 = 25

Winter and winter to buy vegetables, bought 1.5 kg of cabbage, 1.6 yuan per kilogram. Vegetables of the aunt immediately came out, aunt said: "I use mental arithmetic plus half method." Make it clear Do you know how to do mental arithmetic with "half addition"?

1 kg 1.6 yuan, then 0.5 kg 0.8 yuan, 1.6 + 0.8 = 2.4 yuan

Dongdong bought 5 pencils, 4 erasers and 8 exercise books in the "love stationery store". He paid his aunt 20 yuan, and his aunt gave him 5 yuan and 50 Jiao Dong Dong calculated the price of the pencils at 80 cents per piece and said, "Auntie, you have miscalculated your account!" is Dongdong right? Why?

It may be true, because 10.5 can't be exactly divided by 2, no matter what the price of the eraser and exercise book is

This schoolbag is my mother's present for my 12th birthday

This bag is a present my mother gave me for my 12-year-old birthday.

You can buy a cake or a schoolbag as her birthday present

You may buy her a cake or schoolbag as birthday gift

Dongdong said to his mother, "I want to buy a dictionary. Please give me 20 yuan." Come on! Not in five minutes

Dongdong said to his mother that she would give him 20 yuan to buy a dictionary

(1) Xiao Ming said to his mother, "I got 100 points on the test." (2) the boy said, "I hope I can do the same (1) Xiao Ming said to his mother, "I got 100 points in the exam." (2) The boy said, "I wish I could be such a brother." (3) The officer said to the child, "you will become a real soldier." (4) Beethoven said, "I've come to play a song for this girl."

Change the first person into the third person and remove the punctuation!
Xiao Ming said to his mother that he got 100 points in the exam
The boy said he wanted to be such a brother
The officer told the boy that he would become a real soldier
Beethoven said he had come to play a tune for the girl

There are 24 more story books than science and technology books, 1 / 4 less science and technology books than story books