Question

Реши задачу разными способами. В библиотеку превезли 6 пачек учебников, по 5 книг в каждой, и 4 пачки справочников, по 5 книг в каждой. Сколько всего книг привезли в библиотеку?

Answer 1

1)6×5=30
2)4×5=20
3)30+20=50
2способ
1)6+4=10
2)5×10=50

Answer 2

Problem Analysis

To solve this problem, we need to find the total number of books brought to the library. We are given that there are 6 packs of textbooks, with 5 books in each pack, and 4 packs of reference books, with 5 books in each pack. We need to calculate the total number of books.

Solution 1: Using Multiplication

We can solve this problem by multiplying the number of packs by the number of books in each pack for both textbooks and reference books, and then adding the results together.

The number of textbooks is calculated as follows: 6 packs * 5 books per pack = 30 textbooks.

The number of reference books is calculated as follows: 4 packs * 5 books per pack = 20 reference books.

To find the total number of books, we add the number of textbooks and reference books together: 30 textbooks + 20 reference books = 50 books.

Therefore, a total of 50 books were brought to the library.

Solution 2: Using Addition

Another way to solve this problem is by adding the number of books in each pack for both textbooks and reference books, and then multiplying the results by the number of packs.

The number of textbooks is calculated as follows: 6 packs * (5 books per pack) = 30 textbooks.

The number of reference books is calculated as follows: 4 packs * (5 books per pack) = 20 reference books.

To find the total number of books, we add the number of textbooks and reference books together: 30 textbooks + 20 reference books = 50 books.

Therefore, a total of 50 books were brought to the library.

Solution 3: Using Division

We can also solve this problem by dividing the total number of books by the number of books in each pack.

The number of textbooks is calculated as follows: 6 packs * 5 books per pack = 30 textbooks.

The number of reference books is calculated as follows: 4 packs * 5 books per pack = 20 reference books.

To find the total number of books, we can divide the sum of textbooks and reference books by the number of books in each pack: (30 textbooks + 20 reference books) / 5 books per pack = 50 books.

Therefore, a total of 50 books were brought to the library.

Summary

In summary, there are different ways to solve this problem. By using multiplication, addition, or division, we can find that a total of 50 books were brought to the library.