Question

В зале89 стульев сначала из зала вынесли 2 стула, потом1. Сколько стульев осталось? На сколько меньше стульев стало в зале? На сколько меньше стульев вынесли ,чем осталось? На сколько меньше стульев вынесли,чем их было?

Answer 1

Осталось 86 стульев. На 3 стула стало меньше. На 3.На 3.

Answer 2

Problem Analysis

We are given that there are initially 89 chairs in a room. First, 2 chairs are taken out of the room, followed by 1 more chair. We need to determine the following: 1. How many chairs are left in the room? 2. By how many chairs did the number of chairs in the room decrease? 3. By how many chairs did they take out fewer chairs than the number that remained? 4. By how many chairs did they take out fewer chairs than the initial number of chairs?

Solution

1. To find out how many chairs are left in the room, we need to subtract the number of chairs taken out from the initial number of chairs. - Initial number of chairs: 89 - Chairs taken out: 2 + 1 = 3 - Chairs left in the room: 89 - 3 = 86 chairs.

2. To determine the decrease in the number of chairs, we need to find the difference between the initial number of chairs and the number of chairs left in the room. - Initial number of chairs: 89 - Chairs left in the room: 86 - Decrease in the number of chairs: 89 - 86 = 3 chairs.

3. To calculate the difference between the number of chairs taken out and the number of chairs left in the room, we subtract the number of chairs left in the room from the number of chairs taken out. - Chairs taken out: 3 - Chairs left in the room: 86 - Difference: 3 - 86 = -83 chairs (negative value indicates that more chairs were left in the room than taken out).

4. To determine the difference between the number of chairs taken out and the initial number of chairs, we subtract the initial number of chairs from the number of chairs taken out. - Initial number of chairs: 89 - Chairs taken out: 3 - Difference: 3 - 89 = -86 chairs (negative value indicates that more chairs were initially present than taken out).

Therefore, the answers to the given questions are as follows: 1. There are 86 chairs left in the room. 2. The number of chairs in the room decreased by 3 chairs. 3. They took out -83 chairs fewer than the number that remained. 4. They took out -86 chairs fewer than the initial number of chairs.

Please let me know if anything is unclear or if you have any further questions!