Buzz
Guidelines for solving Exercise 3 on page 25 of the 4th-grade math textbook
Problem:
a) In 1010, Lý Thái Tổ moved the capital to Thăng Long. Which century does that year belong to? How many years have passed until now?
b) Ngô Quyền defeated the Southern Han army on the Bạch Đằng River in 938. Which century does that year belong to? How many years have passed until now?
Solution Method:
1. Finding the century of that year: Refer to the detailed instructions in the Solution to Exercise 2 on page 25 of the 4th-grade Math Textbook.
2. Calculating the number of years: Subtract the given year from the current year (2019).
Answer:
a) Lý Thái Tổ moved the capital to Thăng Long in the 11th century.
Until now (2019), it has been: 2019 - 1010 = 1009 years.
b) Ngô Quyền defeated the Southern Han army on the Bạch Đằng River in the 10th century.
Until now (2019), it has been: 2019 - 938 = 1081 years.
Mytour has just provided guidance on solving Exercise 3 on page 25 of the 4th-grade math textbook. In addition, there are also exercises Solving Exercise 1 on page 25 of the 4th-grade math textbook and Solving Exercise 2 on page 25 of the 4th-grade math textbook. We also suggest solving them with the provided methods. Let's explore the solution to exercise 25 math 4 to excel in 4th-grade math!
