Solving exercises on page 25 of Math 4 textbook

Buzz

Ngày cập nhật gần nhất: 15/4/2026

Content

Guide to solving exercises on page 25 Math 4 including solving methods

Concise guide to solving exercises on page 25 Math 4

Seconds, centuries are two units of time measurement commonly used in life. To help 4th-grade students understand seconds, centuries better, let's solve exercises on page 25 of Math 4 textbook - Exercises 1, 2, 3 - Seconds, centuries in the math solving document for 4th grade to grasp the knowledge better and study well. Let's refer to the detailed document as well as the solving instructions we fully updated below.

=> See more in the table of contents: math solving for 4th grade

Guide to solving exercises on page 25 Math 4 including solving methods

1. Solve Exercise 1 on page 25 of Math 4 textbook

Solution method:
Remember these important facts:
1 hour = 60 minutes
1 minute = 60 seconds
1 year = 12 months
1 year (non-leap) = 365 days
1 year (leap) = 366 days
1 century = 100 years.

2. Solve Exercise 2 on page 25 of Math 4 textbook

Exercise:
a) Uncle Ho was born in 1890. In which century was Uncle Ho born?
Uncle Ho set out to find the way to save the country in 1911. Which century does that year belong to?

b) c)

Solution method:
To determine which century a year belongs to, you need to:
- For years with 3 digits: Take the first digit + 1
Example. Year 938 belongs to the X century (because take 9 + 1 = 10)
- For years with 4 digits: Take the first two digits + 1
Example: Year 1890 belongs to the XIX century (because take 18 + 1 = 19).

Answer:
a) Uncle Ho was born in 1890. Uncle Ho was born in the XIX century or Uncle Ho was born in the 19th century.
Uncle Ho set out to find the way to save the country in 1911. That year belongs to the XX century or Uncle Ho set out to find the way to save the country in the 20th century.
b) The August Revolution succeeded in 1945. That year belongs to the XX century or The August Revolution succeeded in the 20th century.
c) Lady Trieu led the uprising against the Eastern Wu dynasty in 248. That year belongs to the III century or Lady Trieu led the uprising against the Eastern Wu dynasty in the 3rd century.

3. Solve Exercise 3 on page 25 of Math 4 textbook

Exercise:
a) Ly Thai To moved the capital to Thang Long in 1010. Which century does that year belong to?
How many years have passed until now?
b) Ngo Quyen defeated the Southern Han army on the Bach Dang River in 938. Which century does that year belong to? How many years have passed until now?

Solution method:
1. How to determine which century the year belongs to: Refer to the detailed instructions in the Solve Exercise 2 on page 25 of Math 4 textbook.
2. How to calculate the number of years: Subtract the given year from the current year (2019).

Answer:
a) Ly Thai To moved the capital to Thang Long in the 11th century.
Until now (2019), it has been: 2019 - 1010 = 1009 years.
b) Ngo Quyen defeated the Southern Han army on the Bach Dang River in the 10th century.
Until now (2019), it has been: 2019 - 938 = 1081 years.

Concise guide to solving exercises on page 25 Math 4

Solving Math 4 exercises on page 24 SGK - The unit table for measuring mass has been mentioned before. Solving Math 4 exercises not only helps students grasp knowledge about time units but also enables them to be more proactive in the learning process and easier to do homework. Through reference materials for solving Math 4 exercises, students will quickly grasp the method of solving exercises on Seconds, centuries. Now solving exercises on page 25 SGK math 4 is no longer a difficulty for students. It is hoped that with this useful knowledge, it will bring the best learning results for students, as well as the best scores.

Next, let's continue to practice and solve Math 4 page 26 SGK - Practice, Seconds, centuries, invite you to refer to study and improve your knowledge better.

Above is the solution for exercises on page 25 SGK math 4 in the section of solving math exercises for grade 4. Students can review the solution for exercises on page 24 SGK math 4 solved before or preview the solution for exercises on page 26 SGK math 4 to study math grade 4 better.

In Chapter 2 of Math grade 4, students will learn basic arithmetic operations such as addition, subtraction, multiplication, division. To study Math 4 well, students can refer to the hint for solving exercises on page 39 SGK math 4 about addition and the hint for solving exercises on page 40 SGK math 4 about subtraction.

Frequently Asked Questions

What methods are suggested for solving exercises about seconds and centuries?

To solve exercises about seconds and centuries, remember key conversions like 1 hour equals 60 minutes, and 1 century equals 100 years. Use provided methods to determine the century a year belongs to.

How can students determine which century a year belongs to?

To determine which century a year belongs to, take the first two digits of a four-digit year and add one. For three-digit years, take the first digit and add one to find the century.

Why is understanding seconds and centuries important for 4th-grade students?

Understanding seconds and centuries helps 4th-grade students grasp time measurement concepts, enhances their math skills, and prepares them for more complex arithmetic operations in future lessons.

What examples illustrate determining centuries from given years?

For example, Uncle Ho was born in 1890, which is in the 19th century, while the August Revolution succeeded in 1945, placing it in the 20th century. Such examples clarify the concept for students.

How can students practice and improve their understanding of time measurement?

Students can practice their understanding of time measurement by solving exercises in their Math 4 textbook and using reference materials to reinforce their knowledge and improve their problem-solving skills.

Mytour's content is for customer care and travel encouragement only, and we are not responsible.

For errors or inappropriate content, please contact us at: [email protected]