Solving Exercise 2 on Pages 122-123 of Math 5 Textbook

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Ngày cập nhật gần nhất: 15/4/2026

Solving Exercise 2 on Pages 122-123 of Math 5 Textbook: Volume of a Cubic Metal Block

Step-by-step Guide for Exercise 2 on Pages 122-123 of Math 5 Textbook

Problem Statement:
A cubic metal block with a side length of 0.75m. Each cubic meter of this metal weighs 15kg. How much does this metal block weigh in kilograms?

Solution Method:
- Given:
+ Side length of cubic metal block: 0.75m
+ Weight of each cubic meter of metal: 15kg
- Required: Weight of the metal block
- Solution:
+ Step 1: Calculate the volume of the metal block using the formula for the volume of a cubic shape: V = a x a x a
+ Step 2: Convert the result from cubic meters to cubic decimeters
+ Step 3: Calculate the weight of the metal block by multiplying the volume of the metal block by the weight of each cubic meter of metal.

Answer:
The volume of the metal block is:
0.75 x 0.75 x 0.75 = 0.421875 (m³)
Converted: 0.421875 m³ = 421.875 dm³
The metal block weighs:
15 x 421.875 = 6328.125 (kg)
Final Answer: 6328.125kg.

Mytour has just provided a solution guide for Exercise 2 on Pages 122-123 of Math 5 Textbook. In addition, we also offer solutions for Exercise 1 on Pages 122-123 of Math 5 Textbook and Exercise 3 on Pages 122-123 of Math 5 Textbook. Check out the guide for Math Grade 5 pages 122-123 to excel in math in Grade 5!

Frequently Asked Questions

What is the volume calculation method for a cubic metal block?

To calculate the volume of a cubic metal block, use the formula V = a × a × a, where 'a' is the side length. For a side length of 0.75m, the volume is 0.75 × 0.75 × 0.75, resulting in 0.421875 cubic meters.

How do you convert the volume from cubic meters to cubic decimeters?

To convert the volume from cubic meters to cubic decimeters, multiply the volume in cubic meters by 1000. For instance, 0.421875 m³ is equivalent to 421.875 dm³ since 1 m³ equals 1000 dm³.

What is the weight of a cubic metal block with a side length of 0.75m?

The weight of a cubic metal block with a side length of 0.75m can be calculated by first determining the volume, which is 0.421875 m³. Then, multiply this volume by the weight of each cubic meter of metal, which is 15 kg, resulting in a total weight of 6328.125 kg.

Does Mytour provide solutions for other exercises in the Math 5 Textbook?

Yes, Mytour provides solutions for other exercises, including Exercise 1 and Exercise 3 on Pages 122-123 of the Math 5 Textbook. You can find these solutions to excel in your math studies.

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