Question

Реши задачи,составляя вырвжения.Найди несколько решений. У Миши было 50 руб.Он купил 4 тетради по 2 руб. Сколько денег у него осталось?

Answer 1

50-(4•2)=42(руб)
Ответ:.......

Answer 2

50 - ( 4 * 2 ) = 42 рубля как - то так :) ..............      

Answer 3

Problem Analysis

To solve this problem, we need to determine how much money Mishka has left after buying 4 notebooks for 2 rubles each.

Solution 1: Subtraction

One way to solve this problem is by subtracting the cost of the notebooks from the initial amount of money Mishka had.

Mishka had 50 rubles and bought 4 notebooks for 2 rubles each.

To find out how much money Mishka has left, we can subtract the cost of the notebooks from the initial amount of money: 50 rubles - (4 notebooks * 2 rubles per notebook) = 42 rubles.

Therefore, Mishka has 42 rubles left.

Solution 2: Multiplication

Another way to solve this problem is by multiplying the cost of one notebook by the number of notebooks Mishka bought and then subtracting the result from the initial amount of money Mishka had.

Mishka had 50 rubles and bought 4 notebooks for 2 rubles each.

To find out how much money Mishka has left, we can multiply the cost of one notebook by the number of notebooks Mishka bought and then subtract the result from the initial amount of money: 50 rubles - (2 rubles per notebook * 4 notebooks) = 42 rubles.

Therefore, Mishka has 42 rubles left.

Solution 3: Division

We can also solve this problem by dividing the initial amount of money Mishka had by the cost of one notebook and then subtracting the number of notebooks Mishka bought from the result.

Mishka had 50 rubles and bought 4 notebooks for 2 rubles each.

To find out how much money Mishka has left, we can divide the initial amount of money by the cost of one notebook and then subtract the number of notebooks Mishka bought: (50 rubles / 2 rubles per notebook) - 4 notebooks = 42 rubles.

Therefore, Mishka has 42 rubles left.

Conclusion

In all three solutions, we found that Mishka has 42 rubles left after buying 4 notebooks for 2 rubles each.