Combining the Place Values

Oct 13, 2025 by wbrum.org 9 views

Introduction

In mathematics, expanded form is a way of writing a large number as a sum of smaller numbers. This technique is useful for understanding the value of a number and for performing calculations. In this article, we will focus on writing the number 8,128 in expanded form.

What is Expanded Form?

Expanded form is a way of writing a number as a sum of smaller numbers. For example, the number 456 can be written in expanded form as:

4 × 100 + 5 × 10 + 6 × 1

This means that 456 is equal to 4 hundred, 5 tens, and 6 ones.

Writing 8,128 in Expanded Form

To write 8,128 in expanded form, we need to break it down into its place values. The place values for a number are:

Hundreds (10^2)
Tens (10^1)
Ones (10^0)

Using these place values, we can write 8,128 in expanded form as:

8 × 10^3 + 1 × 10^2 + 2 × 10^1 + 8 × 10^0

Breaking Down the Number

Let's break down the number 8,128 into its place values:

8,000 is equal to 8 × 10^3
100 is equal to 1 × 10^2
20 is equal to 2 × 10^1
8 is equal to 8 × 10^0

Combining the Place Values

Now that we have broken down the number 8,128 into its place values, we can combine them to get the expanded form:

8 × 10^3 + 1 × 10^2 + 2 × 10^1 + 8 × 10^0

Simplifying the Expanded Form

We can simplify the expanded form by multiplying the coefficients by their respective place values:

8,000 + 100 + 20 + 8

The Final Answer

The final answer is:

8,128 = 8,000 + 100 + 20 + 8

Conclusion

In this article, we have learned how to write the number 8,128 in expanded form. We broke down the number into its place values and combined them to get the expanded form. We also simplified the expanded form by multiplying the coefficients by their respective place values. The final answer is 8,128 = 8,000 + 100 + 20 + 8.

Frequently Asked Questions

Q: What is expanded form? A: Expanded form is a way of writing a number as a sum of smaller numbers.
Q: How do I write a number in expanded form? A: To write a number in expanded form, break it down into its place values and combine them.
Q: What are the place values for a number? A: The place values for a number are hundreds (10^2), tens (10^1), and ones (10^0).

Additional Resources

References

Mathway
Khan Academy
Expanded Form Q&A: Frequently Asked Questions =====================================================

Introduction

In our previous article, we explored the concept of expanded form and how to write the number 8,128 in expanded form. In this article, we will answer some of the most frequently asked questions about expanded form.

Q: What is expanded form?

A: Expanded form is a way of writing a number as a sum of smaller numbers. It is a technique used to understand the value of a number and to perform calculations.

Q: How do I write a number in expanded form?

A: To write a number in expanded form, you need to break it down into its place values. The place values for a number are:

Hundreds (10^2)
Tens (10^1)
Ones (10^0)

You then multiply each digit by its respective place value and add them together.

Q: What are the place values for a number?

A: The place values for a number are:

Hundreds (10^2)
Tens (10^1)
Ones (10^0)

Q: How do I calculate the place value of a number?

A: To calculate the place value of a number, you need to multiply the digit by its respective place value. For example, if you have the number 456, the place values would be:

4 × 100 = 400 (hundreds)
5 × 10 = 50 (tens)
6 × 1 = 6 (ones)

Q: Can I use expanded form with decimals?

A: Yes, you can use expanded form with decimals. To do this, you need to break down the decimal into its place values and then multiply each digit by its respective place value.

Q: How do I use expanded form to add and subtract numbers?

A: To use expanded form to add and subtract numbers, you need to break down each number into its place values and then add or subtract the corresponding place values.

Q: Can I use expanded form with fractions?

A: Yes, you can use expanded form with fractions. To do this, you need to break down the fraction into its place values and then multiply each digit by its respective place value.

Q: How do I use expanded form to multiply and divide numbers?

A: To use expanded form to multiply and divide numbers, you need to break down each number into its place values and then multiply or divide the corresponding place values.

Q: What are some real-world applications of expanded form?

A: Expanded form has many real-world applications, including:

Calculating the cost of items on a shopping list
Determining the area of a room
Calculating the volume of a container
Understanding the value of a number in a financial context

Conclusion

In this article, we have answered some of the most frequently asked questions about expanded form. We have explored the concept of expanded form, how to write a number in expanded form, and how to use expanded form to add, subtract, multiply, and divide numbers. We have also discussed some real-world applications of expanded form.

Frequently Asked Questions

Q: What is expanded form? A: Expanded form is a way of writing a number as a sum of smaller numbers.
Q: How do I write a number in expanded form? A: To write a number in expanded form, break it down into its place values and combine them.
Q: What are the place values for a number? A: The place values for a number are hundreds (10^2), tens (10^1), and ones (10^0).