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# Lesson 5-1 Percent Increase and Decrease Answer Key

## Blog Introduction:

Understanding the concept of percent increase and decrease can be challenging for most high school students. It gets even more difficult when it comes to solving problems and arriving at the correct answers. That’s where an answer key comes in handy.

In this blog post, I will provide you with a comprehensive guide to the percent increase and decrease answer key. You will learn how to use it to check whether your answers are correct or not. So, sit back and relax, as we explore the world of percent increase and decrease.

### Blog Body:

#### Grasping the Basics of Percent Increase and Decrease

To understand percent increase and decrease, you first need to know the basics. Percent increase refers to an increase in a value by a certain percentage, while percent decrease refers to a decrease in a value by a certain percentage. To calculate these percentages, you need to use the following formulas:

Percent Increase = [(New Value – Old Value)/Old Value] x 100

Percent Decrease = [(Old Value – New Value)/Old Value] x 100

#### Unlocking the Power of the Answer Key

Once you know these formulas, solving percent increase and decrease problems becomes a lot easier. But how do you check if your answers are correct? That’s where the answer key comes in.

The percent increase and decrease answer key includes all the correct answers to the questions in your textbook or worksheet. You can use it to check whether you have solved a problem correctly or not. It is also a great tool to use if you want to practice and improve your skills.

#### Step-by-Step Guide to Using the Answer Key

To use the answer key, first, solve the problem yourself. Then, compare your answer to the one provided in the answer key. If your answer matches the one in the answer key, congratulations! You have solved the problem correctly.

If, on the other hand, your answer is different, review your work to see where you went wrong. Check all your calculations to identify any errors you may have made. Once you have identified the error, try again until you arrive at the correct answer.

### Conclusion: A Path to Mastery

Using the percent increase and decrease answer key is an excellent way to check your work and improve your skills. Make sure you understand the concepts of percent increase and decrease and know how to use the formulas before attempting any problems. Solving problems can be challenging, but with enough practice, you will become an expert in no time. Remember, practice makes perfect! So, embrace the assistance of the answer key, and watch your confidence in percent increase and decrease problems soar.

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