Question

В библиотеке на одной полке стояло 32 книги,а на другой 40 книг. из них выдали детям 20 книг. сколько книг осталось на этих полках. Реши задачу двумя способоми.

Answer 1

Я думаю так

1) 40-20=20(к)-осталось на полке.
2) 32+20=52(к)
Ответ:52 книги осталось на полках.
или так можно решить

1) 32+40=72(к)-всего на двух полках.
2) 72-20=52(к)
Ответ:52 книги осталось на полках

Answer 2

только могу дать один способ

1 40+32=72

2 72 - 25=47

Answer 3

Problem Statement

In a library, there were 32 books on one shelf and 40 books on another shelf. 20 books were given to children. How many books are left on these shelves? Solve the problem using two different methods.

Method 1: Subtraction

To solve this problem using subtraction, we can subtract the number of books given to children from the total number of books on the shelves.

1. Number of books on the first shelf: 32 2. Number of books on the second shelf: 40 3. Number of books given to children: 20

To find the number of books left on the shelves, we subtract the number of books given to children from the total number of books on the shelves:

Number of books left on the shelves = (Number of books on the first shelf + Number of books on the second shelf) - Number of books given to children

Number of books left on the shelves = (32 + 40) - 20

Performing the calculation:

Number of books left on the shelves = 72 - 20

Number of books left on the shelves = 52

Therefore, there are 52 books left on the shelves.

Method 2: Addition and Subtraction

Another way to solve this problem is by using addition and subtraction.

1. Number of books on the first shelf: 32 2. Number of books on the second shelf: 40 3. Number of books given to children: 20

To find the number of books left on the shelves, we can add the number of books on both shelves and then subtract the number of books given to children:

Number of books left on the shelves = (Number of books on the first shelf + Number of books on the second shelf) - Number of books given to children

Number of books left on the shelves = (32 + 40) - 20

Performing the calculation:

Number of books left on the shelves = 72 - 20

Number of books left on the shelves = 52

Therefore, there are 52 books left on the shelves.

Both methods yield the same result: 52 books left on the shelves.