Question

В кувшине 7 стаканов молока, а в банке 8 стаканов. За обедом дети выпили 5 стаканов молока. Сколько всего стаканов молока осталось? Реши задачу разными способами.

Answer 1

это легко (7+8)-5=10

Answer 2

Щя посчитаю, ок?думаю

Answer 3

Problem Analysis

We are given that there are 7 cups of milk in a pitcher and 8 cups of milk in a jar. During lunch, the children drank 5 cups of milk. We need to determine how many cups of milk are left.

Solution 1: Subtraction

We can solve this problem by subtracting the number of cups of milk the children drank from the total number of cups of milk in the pitcher and jar.

The total number of cups of milk in the pitcher and jar is 7 + 8 = 15 cups. The children drank 5 cups of milk.

To find the number of cups of milk left, we subtract 5 from 15: 15 - 5 = 10.

Answer: There are 10 cups of milk left.

Solution 2: Individual Calculation

Another way to solve this problem is by calculating the number of cups of milk left in the pitcher and jar separately.

The pitcher initially had 7 cups of milk, and the children drank 5 cups. Therefore, the pitcher has 7 - 5 = 2 cups of milk left.

The jar initially had 8 cups of milk, and the children drank 5 cups. Therefore, the jar has 8 - 5 = 3 cups of milk left.

To find the total number of cups of milk left, we add the number of cups of milk left in the pitcher and jar: 2 + 3 = 5.

Answer: There are 5 cups of milk left.

Solution 3: Combined Calculation

We can also solve this problem by combining the number of cups of milk in the pitcher and jar and subtracting the number of cups the children drank.

The total number of cups of milk in the pitcher and jar is 7 + 8 = 15 cups. The children drank 5 cups of milk.

To find the number of cups of milk left, we subtract 5 from 15: 15 - 5 = 10.

Answer: There are 10 cups of milk left.

In summary, there are multiple ways to solve this problem. The number of cups of milk left can be found by subtracting the number of cups the children drank from the total number of cups of milk in the pitcher and jar. Alternatively, we can calculate the number of cups of milk left in the pitcher and jar separately and then add them together.