Solve Exercise 3 on Page 30 Math 5

Solution guide for exercise 3 on page 30 of Math 5 Workbook

Problem:
Wood is used to cover the floor of a rectangular room with a length of 6m and a width of 4m. Calculate the cost of buying wood to cover the entire room, given that the price of 1m² of flooring wood is 280,000 VND?

Solution Method:

- To find the floor area of the room, use the formula for the area of a rectangle: A = length x width (where length is the length and width is the width).

- To calculate the cost of buying wood to cover the rectangular room, simply multiply the floor area of the room (previously found) by the price per square meter of wood.

Answer:
The floor area of the room is:
      6 x 4 = 24 (m²)
The cost of buying wood to cover the floor is:
      280,000 x 24 = 6,720,000 (VND)
  Answer: 6,720,000 VND.

Here is the solution guide for exercise 3 on page 30 of Math 5 textbook. Additionally, this section includes three more exercises: Solve Exercise 1 on Page 30 Math 5, Solve Exercise 2 on Page 30 Math 5, and Solve Exercise 4 on Page 30 Math 5. Let's explore the instructions for solving exercises on page 30 Math 5 to excel in the subject of 5th-grade Math!