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Chapter 1: Problem 7

Find each sum or product. Explain your reasoning. $$13+8+7$$

Short Answer

Expert verified
The sum is 28.

Step by step solution

01

Add the First Two Numbers

Start by adding the first two numbers in the expression: 13 and 8.\[13 + 8 = 21\]
02

Add the Third Number

Now, add the result from Step 1 to the third number in the expression, which is 7.\[21 + 7 = 28\]
03

Conclusion

You've added all the numbers together, so the final sum is 28.

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Key Concepts

These are the key concepts you need to understand to accurately answer the question.

Understanding Addition
Addition is one of the basic operations in arithmetic. It involves combining two or more numbers to get a total sum. Let's break it down:
  • **Addends**: These are the numbers you are adding together. In our example, the addends are 13, 8, and 7.

  • **Sum**: This is the total you get after adding the addends. In the given exercise, the sum is 28.
Addition is part of our everyday life. You can see it in tasks like counting money or combining measurements. Once you're familiar with doing addition on paper, you'll find it easier to do it in your head too.
Step-by-Step Math Explanations
When tackling a math problem, breaking it down into smaller parts helps you understand it better. This is what step-by-step explanations do.
Consider this approach: - **Step 1**: Focus on adding just two numbers to begin with. For instance, adding 13 and 8 first makes the problem easier to handle. - **Step 2**: Take the result from the first step, and add it to the next number, which is 7 in our exercise.
- **Step 3**: This gives you the final result, ensuring that you've covered all parts of the problem. Step-by-step math solutions can also help catch mistakes. If the result isn't what you expected, you can revisit each step to find where things might have gone awry.
Introduction to Elementary Math
Elementary math covers the basic concepts and operations which form the foundation for more advanced concepts. These include addition, subtraction, multiplication, and division. Focusing on these fundamental areas will strengthen your numerical literacy.

Why is Elementary Math Important?

- It helps develop problem-solving skills.
- It is essential for daily activities like shopping and budgeting.

How to Master Elementary Math

  • Practice regularly with different types of problems.
  • Take it step-by-step to avoid getting overwhelmed.
  • Use visual aids when possible to understand concepts better.
By mastering elementary math, you lay a solid groundwork for all future math learning adventures.

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Most popular questions from this chapter

Simplify each expression. $$(23+k)+34$$

Suppose only the 1, +, -, x, \(\div\) (, ), and ENTER keys on a calculator are working. How can you get a result of 75 if you are only allowed to push these keys fewer than 20 times?

Round each number to the nearest whole number. 49.6

Evaluate each expression. $$(3 \cdot 4)+(9 \cdot 5)$$

Find the next term in each list. $$20,33,46,59,72, \dots$$
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