Solving exercises on pages 167, 168 of Math 3 textbook

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Ngày cập nhật gần nhất: 15/4/2026

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Solution to exercise 1 on page 167 of Math 3 textbook

Solution to exercise 2 on page 167 of Math 3 textbook

Solution to exercise 3 on page 167 of Math 3 textbook

Solution to exercise 4 on page 168 of Math 3 textbook

Refer to the solutions for exercises on pages 167, 168 of Math 3 textbook, Practice for students to supplement their knowledge and skills in solving problems related to units as well as knowing how to solve the exercises they have not been able to do and complete the homework section most effectively.

Solution to exercise 1 on page 167 of Math 3 textbook

Problem:

A person rides a bike for 12 minutes and covers 3km. If they continue riding at the same pace for 28 minutes, how many kilometers will they travel?

Answer:

The minutes to travel 1 km is:

12 : 3 = 4 (minutes)

The number of kilometers traveled in 48 minutes is:

28 : 4 = 7 (km)

Answer: 7 km

Solution to exercise 2 on page 167 of Math 3 textbook

Problem:

There are 21 kg of rice divided equally into 7 bags. How many bags should be taken to get 15 kg of rice?

Answer:

The number of kilograms of rice in each bag is:

21 : 7 = 3 (kg)

To get 15kg of rice, the number of bags to take is:

15 : 3 = 5 (bags)

Answer: 5 bags.

Solution to exercise 3 on page 167 of Math 3 textbook

Problem:

Fill in 'x; :'

Answer:

Solution to exercise 4 on page 168 of Math 3 textbook

Problem:

Given:

Class 3A has 10 excellent students, 15 good students, and 5 average students.

Class 3B has 7 excellent students, 20 good students, 2 average students

Class 3C has 9 excellent students, 22 good students, 1 average student

Class 3D has 8 excellent students, 19 good students, 3 average students

Create a table according to the template and write the appropriate numbers in the empty cells in the table?

Answer:

In the upcoming lesson, you will review Solving exercises on page 168 of Math 3 textbook as well as the content of Reviewing numbers up to 100,000 with the part Solving exercises on page 169 of Math 3 textbook to practice math skills.

Frequently Asked Questions

How can students improve their skills in solving problems in Math 3?

Students can enhance their Math 3 skills by practicing exercises from pages 167 and 168 of the textbook, which provide effective strategies for solving unit-related problems and completing homework.

What is the distance covered by a person riding a bike for 28 minutes?

A person riding a bike for 28 minutes will cover 7 kilometers, calculated by determining the time taken to ride 1 kilometer and applying that to the extended duration.

How many bags of rice are needed to obtain 15 kilograms?

To get 15 kilograms of rice, you need to take 5 bags. Each bag contains 3 kilograms, so 15 divided by 3 equals 5 bags.

What kind of student distribution is presented in Class 3A to Class 3D?

The distribution includes various students across classes, with Class 3A having 10 excellent, 15 good, and 5 average students, while other classes have similar categorizations that can be tabulated.

What additional topics are covered after solving exercises on page 168 of Math 3?

Following the exercises on page 168, students will review numbers up to 100,000 and practice solving additional exercises on page 169 to strengthen their mathematical abilities.

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