Lesson: Word Problems with Measurement

Introduction

In this lesson, we will learn how to solve word problems that involve measurement. Understanding how to extract information from a problem and translate it into mathematical equations is crucial.

Steps to Solve Word Problems with Measurement

1. Read the problem carefully: Identify what is being asked.
2. Highlight key information: Look for numbers and measurement units.
3. Translate words into equations: Use mathematical symbols to represent the problem.
4. Solve the equation: Calculate the solution using appropriate methods.
5. Check your answer: Ensure it makes sense in the context of the problem.

Example Problem

Problem: Sarah has a ribbon that is 150 cm long. She cuts off a piece that is 45 cm long. How much ribbon does she have left?

Steps to Solve:

1. Identify the total length of the ribbon: 150 cm
2. Identify the length cut off: 45 cm
3. Set up the equation: $$\text{Remaining Length} = \text{Total Length} - \text{Cut Length}$$ $$\text{Remaining Length} = 150 \text{ cm} - 45 \text{ cm}$$
4. Calculate: $$\text{Remaining Length} = 105 \text{ cm}$$
5. Check the answer: 150 cm - 45 cm = 105 cm (Correct!)

Key Questions

• What information do I need to solve the problem?
• How can I express the problem using an equation?
• What operations are necessary to find the solution?
• Does my answer make sense in the context of the problem?

Conclusion

By practicing word problems, you can develop a better understanding of measurements and improve your problem-solving skills.