Problems related to unit withdrawal

### 1.1. Knowledge to remember

__ Problem 1:__ Yes 35

*l*His honey divided equally into 7 cans. How many liters of honey are in each can?

*Solution*

The number of liters of honey in each can is:

35 : 7 = 5 (*l*)

The number of liters of honey in 2 cans is:

5 x 2 = 10 (*l*)

Answer: 10*l* honey.

__ Problem 2:__ Yes 35

*l*Divide honey evenly into 7 cans. How many liters of honey are in 2 cans?

*Summary: *

7 cans: 35*l*

2 cans: … *l*

*Solution*

The number of liters of honey in each can is:

35 : 7 = 5 (*l*)

The number of liters of honey in 2 cans is:

5 x 2 = 10 (*l*)

Answer: 10*l* honey.

### 1.2. Solving Textbook Exercises

**Lesson 1:** There are 24 pills in 4 blister packs. How many pills are in those 3 packs?

__Solution guide:__

*Summary:*

4 blisters: 24 pills

3 blisters: …pill?

– Find how many pills a blister can hold.

– Find how many pills can hold in three blisters.

*Solution*

Number of pills in each blister is:

24 : 4 = 6 (pill)

3 packs with the number of pills are:

6 x 3 = 18 (pill)

Answer: 18 pills.

**Lesson 2:** There are 28kg of rice in 7 bags. How many kilograms of rice are in those 5 bags?

__Solution guide:__

*Summary:*

7 bags: 28kg of rice

5 bags: ? kg of rice

– Find how many kilograms of rice can be in 1 bag.

– Find how many kilograms of rice can be in 3 bags by multiplying the weight of rice in one bag by 3.

*Solution*

Each bag can hold the number of kilograms of rice:

28 : 7 = 4 (kg)

5 bags that can hold kilograms of rice are:

4 x 5 = 20 (kg)

Answer: 20 kg.

**Lesson 3:** Given 8 triangles, each as shown below. Please form the required shape

__Solution guide:__

- Divide the shape to be arranged into small triangles.

Arrange the triangle according to the following figure, we will get the picture according to the problem given:

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