Question

Реши задачу,составляя выражения. В одной коробке было 6 карандаше,а в другой - 12 карандашей.Катя взяла 5 карандашей.Сколько карандашей осталось в этих двух коробках? Решить тремя способами.

Answer 1

1.12+6=18.

2.18-5=13

 

3. 

Answer 2

В 1 кор-6 карандашей

Вдругой-12 карандашей

Катя взела-5

Сколько карандашей в 2х коробках?

1)12+6=18кар

2)18-5=13кар

3)18-5=13

Всего 13 кар в двух коробках.

Answer 3

Problem Statement

В одной коробке было 6 карандашей, а в другой - 12 карандашей. Катя взяла 5 карандашей. Сколько карандашей осталось в этих двух коробках? Решить тремя способами.

Solution

To solve this problem, we can use three different methods: subtraction, addition, and counting.

Method 1: Subtraction We can subtract the number of pencils taken by Katya from the total number of pencils in both boxes to find the remaining pencils.

- Total number of pencils in the first box: 6 - Total number of pencils in the second box: 12 - Number of pencils taken by Katya: 5

To find the remaining pencils, we subtract the number of pencils taken by Katya from the total number of pencils in both boxes:

Remaining pencils = (Total pencils in the first box + Total pencils in the second box) - Number of pencils taken by Katya

Remaining pencils = (6 + 12) - 5

Method 2: Addition Alternatively, we can add the number of pencils in both boxes and then subtract the number of pencils taken by Katya.

- Total number of pencils in the first box: 6 - Total number of pencils in the second box: 12 - Number of pencils taken by Katya: 5

To find the remaining pencils, we add the number of pencils in both boxes and then subtract the number of pencils taken by Katya:

Remaining pencils = (Total pencils in the first box + Total pencils in the second box) - Number of pencils taken by Katya

Remaining pencils = (6 + 12) - 5

Method 3: Counting We can also count the number of pencils left in each box after Katya takes 5 pencils.

- Total number of pencils in the first box: 6 - Total number of pencils in the second box: 12 - Number of pencils taken by Katya: 5

To find the remaining pencils, we subtract the number of pencils taken by Katya from the total number of pencils in each box:

Remaining pencils in the first box = Total pencils in the first box - Number of pencils taken by Katya Remaining pencils in the second box = Total pencils in the second box - Number of pencils taken by Katya

Remaining pencils in the first box = 6 - 5 Remaining pencils in the second box = 12 - 5

Calculation

Let's calculate the remaining pencils using the three methods:

Method 1: Subtraction Remaining pencils = (6 + 12) - 5 = 18 - 5 = 13

Method 2: Addition Remaining pencils = (6 + 12) - 5 = 18 - 5 = 13

Method 3: Counting Remaining pencils in the first box = 6 - 5 = 1 Remaining pencils in the second box = 12 - 5 = 7

Answer

Using the three different methods, we find that there are 13 pencils remaining in the two boxes. Alternatively, there is 1 pencil remaining in the first box and 7 pencils remaining in the second box.