Solve Exercise 5 on Pages 100, 101 of Math Textbook Grade 4

Guidance on solving exercise 5 on pages 100, 101 of Math textbook grade 4

Solution method:
Students carefully observe the graph and match the questions with the information on the graph to answer all the requirements. 
- Question a): To find out which city has the highest population density, students observe the graph, and if any column is the highest, then that is the city with the highest population density.
- Question b): To find out how many times the population density in Ho Chi Minh City is higher than the population density in Hai Phong, students take the population density of Ho Chi Minh City and divide it by the population density in Hai Phong, the quotient is the number of times needed to find. 

Answer:
a) Hanoi is the city with the highest population density (2952 people/km²).
b) The population density in Ho Chi Minh City is 2375 people/km².
The population density in Hai Phong is 1126 people/km²;
We have: 2375 : 1126 = 2 remainder 123
So, the population density in Ho Chi Minh City is approximately 2 times higher than the population density in Hai Phong.

Mytour has just provided solutions for exercise 5 on pages 100, 101 of Math textbook grade 4. In addition, we also have solutions for Exercise 1 on Pages 100, 101 of Math Textbook Grade 4, Exercise 2 on Pages 100, 101 of Math Textbook Grade 4, Exercise 3 on Pages 100, 101 of Math Textbook Grade 4 and Exercise 4 on Pages 100, 101 of Math Textbook Grade 4 along with methods. Let's see the instructions for solving math problems for grade 4 pages 100, 101 to study math grade 4 well!