Round to the nearest dollar

Oct 13, 2025 by wbrum.org 90 views

Blake's Stereo Savings: A Math Problem

When it comes to buying a new stereo, Blake was able to snag a great deal. He paid $82.75 for a stereo that usually costs $118.79. But how much did he actually save? Let's dive into the math to find out.

Understanding the Problem

To estimate how much Blake saved, we need to find the difference between the original price and the price he paid. This is a simple subtraction problem, but we need to make sure we're using the correct numbers.

Option A: $110 - $80

One possible answer is to subtract $80 from $110. This gives us a difference of $30. However, this is not the correct answer because the original price of the stereo is $118.79, not $110.

Option B: $120 - $90

Another possible answer is to subtract $90 from $120. This gives us a difference of $30. However, this is also not the correct answer because the original price of the stereo is $118.79, not $120.

Option C: $118.79 - $82.75

The correct answer is to subtract $82.75 from $118.79. This gives us a difference of $36.04. This is the best estimate of how much Blake saved.

Why is Option C the Correct Answer?

Option C is the correct answer because it uses the original price of the stereo ($118.79) and the price Blake paid ($82.75). This gives us the most accurate estimate of how much Blake saved.

Rounding to the Nearest Dollar

If we round the difference to the nearest dollar, we get $36. This is a more conservative estimate of how much Blake saved, but it's still a good estimate.

Conclusion

In conclusion, the best estimate of how much Blake saved is $36.04. This is the correct answer because it uses the original price of the stereo and the price Blake paid. By subtracting the price Blake paid from the original price, we get the most accurate estimate of how much he saved.

Mathematical Concepts

This problem involves several mathematical concepts, including:

Subtraction: We need to subtract the price Blake paid from the original price to find the difference.
Rounding: We need to round the difference to the nearest dollar to get a more conservative estimate.
Estimation: We need to estimate how much Blake saved based on the difference between the original price and the price he paid.

Real-World Applications

This problem has real-world applications in many areas, including:

Shopping: When shopping for a new stereo, it's essential to know how much you're saving by buying it at a discounted price.
Finance: When making financial decisions, it's crucial to understand the difference between the original price and the price you pay.
Business: When running a business, it's essential to understand the difference between the original price and the price customers pay to make informed decisions.

Tips and Tricks

Here are some tips and tricks to help you solve this problem:

Use the correct numbers: Make sure to use the original price and the price you paid to get the most accurate estimate.
Round to the nearest dollar: Rounding to the nearest dollar can help you get a more conservative estimate.
Estimate carefully: Estimating how much you saved requires careful consideration of the difference between the original price and the price you paid.

Practice Problems

Here are some practice problems to help you practice solving this type of problem:

Problem 1: A stereo usually costs $150.00, but you can buy it for $120.00. How much did you save?
Problem 2: A TV usually costs $200.00, but you can buy it for $180.00. How much did you save?
Problem 3: A laptop usually costs $300.00, but you can buy it for $250.00. How much did you save?

Answer Key

Here are the answers to the practice problems:

Problem 1: $30.00
Problem 2: $20.00
Problem 3: $50.00
Blake's Stereo Savings: A Math Problem Q&A

We've already discussed how to estimate how much Blake saved by buying a stereo at a discounted price. But if you have more questions or need further clarification, we've got you covered. Here are some frequently asked questions and answers to help you understand the problem better.

Q: What is the original price of the stereo?

A: The original price of the stereo is $118.79.

Q: What is the price Blake paid for the stereo?

A: Blake paid $82.75 for the stereo.

Q: How much did Blake save?

A: Blake saved $36.04, which is the difference between the original price and the price he paid.

Q: Why is Option C the correct answer?

A: Option C is the correct answer because it uses the original price of the stereo ($118.79) and the price Blake paid ($82.75). This gives us the most accurate estimate of how much Blake saved.

Q: Can I use a calculator to solve this problem?

A: Yes, you can use a calculator to solve this problem. Simply enter the original price and the price Blake paid, and the calculator will give you the difference.

Q: What if I round the difference to the nearest dollar?

A: If you round the difference to the nearest dollar, you get $36. This is a more conservative estimate of how much Blake saved.

Q: Can I use this problem to estimate how much I saved on other purchases?

A: Yes, you can use this problem as a model to estimate how much you saved on other purchases. Simply substitute the original price and the price you paid into the equation, and you'll get an estimate of how much you saved.

Q: What if I'm not sure how much I saved?

A: If you're not sure how much you saved, you can try using a calculator or estimating the difference based on the original price and the price you paid. You can also try rounding the difference to the nearest dollar to get a more conservative estimate.

Q: Can I use this problem to teach others about math?

A: Yes, you can use this problem to teach others about math. Simply explain the problem and the solution, and use it as a model to teach others about subtraction, estimation, and rounding.

Q: What are some real-world applications of this problem?

A: Some real-world applications of this problem include:

Shopping: When shopping for a new stereo, it's essential to know how much you're saving by buying it at a discounted price.
Finance: When making financial decisions, it's crucial to understand the difference between the original price and the price you pay.
Business: When running a business, it's essential to understand the difference between the original price and the price customers pay to make informed decisions.

Q: Can I use this problem to practice my math skills?

A: Yes, you can use this problem to practice your math skills. Simply try solving the problem on your own, and then check your answer with the solution provided.

Q: What if I get stuck on this problem?

A: If you get stuck on this problem, try breaking it down into smaller steps. You can also try using a calculator or asking a friend or teacher for help.

Q: Can I use this problem to teach others about math in a fun way?

A: Yes, you can use this problem to teach others about math in a fun way. Simply turn the problem into a game or a challenge, and use it to engage others in math.

Conclusion

In conclusion, Blake's stereo savings problem is a great way to practice your math skills and understand the concept of subtraction, estimation, and rounding. By using this problem as a model, you can estimate how much you saved on other purchases and make informed financial decisions.