Expressing the Product as a Product of Prime Factors

Oct 13, 2025 by wbrum.org 141 views

Introduction

In mathematics, numbers can be represented in various forms, including standard form and usual form. Standard form is a way of expressing large numbers in a compact and manageable format, while usual form is the conventional way of writing numbers. In this article, we will explore how to write numbers in standard form and usual form, and also learn how to express a product of two numbers as a product of its prime factors in exponential form.

a) Writing $$2 9 4 0 0 0 0$$ in Standard Form

Standard form is a way of expressing large numbers in the form of a number between 1 and 10 multiplied by a power of 10. To write $$2 9 4 0 0 0 0$$ in standard form, we need to identify the number between 1 and 10 and the power of 10.

The number between 1 and 10 is 29, and the power of 10 is 6 (since there are 6 zeros after the number 29). Therefore, $$2 9 4 0 0 0 0$$ can be written in standard form as:

2.94 \times 10^6

b) Writing $$5.92 \times 10^5$$ in Usual Form

Usual form is the conventional way of writing numbers. To write $$5.92 \times 10^5$$ in usual form, we need to multiply the number between 1 and 10 by the power of 10.

The number between 1 and 10 is 5.92, and the power of 10 is 5. Therefore, $$5.92 \times 10^5$$ can be written in usual form as:

592,000

c) Writing $$48 \times 72$$ as a Product of its Prime Factors in Exponential Form

To write $$48 \times 72$$ as a product of its prime factors in exponential form, we need to factorize both numbers into their prime factors.

Factorizing 48

The prime factorization of 48 is:

48 = 2^4 \times 3

Factorizing 72

The prime factorization of 72 is:

72 = 2^3 \times 3^2

Expressing the Product as a Product of Prime Factors

Now that we have the prime factorization of both numbers, we can express the product $$48 \times 72$$ as a product of its prime factors in exponential form.

48 \times 72 = (2^4 \times 3) \times (2^3 \times 3^2)

Using the laws of exponents, we can simplify the expression:

48 \times 72 = 2^{4+3} \times 3^{1+2}

48 \times 72 = 2^7 \times 3^3

Therefore, $$48 \times 72$$ can be written as a product of its prime factors in exponential form as:

2^7 \times 3^3

Conclusion

In this article, we have learned how to write numbers in standard form and usual form, and also how to express a product of two numbers as a product of its prime factors in exponential form. We have seen how to factorize numbers into their prime factors and how to use the laws of exponents to simplify expressions. By understanding these concepts, we can represent large numbers in a compact and manageable format, and also gain a deeper understanding of the properties of numbers.

Key Takeaways

Standard form is a way of expressing large numbers in the form of a number between 1 and 10 multiplied by a power of 10.
Usual form is the conventional way of writing numbers.
To express a product of two numbers as a product of its prime factors in exponential form, we need to factorize both numbers into their prime factors and then use the laws of exponents to simplify the expression.

Practice Problems

Write $$1.23 \times 10^4$$ in usual form.
Write $$9.56 \times 10^3$$ in standard form.
Factorize $$120$$ into its prime factors.
Express $$120 \times 180$$ as a product of its prime factors in exponential form.
Write $$3.14 \times 10^2$$ in usual form.

Answers

12,300
9,560
$120 = 2^3 \times 3 \times 5$
$120 \times 180 = 2^3 \times 3^2 \times 5 \times 2^2 \times 3^2 \times 5$

120 \times 180 = 2^5 \times 3^4 \times 5^2

314
Q&A: Standard Form, Usual Form, and Prime Factorization ===========================================================

Introduction

In our previous article, we explored the concepts of standard form, usual form, and prime factorization. In this article, we will answer some frequently asked questions related to these topics.

Q: What is standard form?

A: Standard form is a way of expressing large numbers in the form of a number between 1 and 10 multiplied by a power of 10.

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

A: To write a number in standard form, you need to identify the number between 1 and 10 and the power of 10. For example, the number 456,000 can be written in standard form as:

4.56 \times 10^5

Q: What is usual form?

A: Usual form is the conventional way of writing numbers.

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

A: To write a number in usual form, you need to multiply the number between 1 and 10 by the power of 10. For example, the number $$5.92 \times 10^5$$ can be written in usual form as:

592,000

Q: What is prime factorization?

A: Prime factorization is the process of breaking down a number into its prime factors.

Q: How do I factorize a number into its prime factors?

A: To factorize a number into its prime factors, you need to find the prime numbers that multiply together to give the original number. For example, the number 120 can be factorized into its prime factors as:

120 = 2^3 \times 3 \times 5

Q: How do I express a product of two numbers as a product of its prime factors in exponential form?

A: To express a product of two numbers as a product of its prime factors in exponential form, you need to factorize both numbers into their prime factors and then use the laws of exponents to simplify the expression. For example, the product $$48 \times 72$$ can be expressed as a product of its prime factors in exponential form as:

2^7 \times 3^3

Q: What are the laws of exponents?

A: The laws of exponents are a set of rules that govern the behavior of exponents when they are multiplied or divided. Some of the key laws of exponents include:

When multiplying two numbers with the same base, add the exponents.
When dividing two numbers with the same base, subtract the exponents.
When raising a number to a power and then raising the result to another power, multiply the exponents.

Q: How do I use the laws of exponents to simplify an expression?

A: To use the laws of exponents to simplify an expression, you need to identify the base and the exponents in the expression and then apply the laws of exponents to simplify the expression. For example, the expression $$2^3 \times 2^4$$ can be simplified using the laws of exponents as:

2^3 \times 2^4 = 2^{3+4} = 2^7

Conclusion

In this article, we have answered some frequently asked questions related to standard form, usual form, and prime factorization. We hope that this article has provided you with a better understanding of these concepts and how to apply them in mathematical problems.

Key Takeaways

Standard form is a way of expressing large numbers in the form of a number between 1 and 10 multiplied by a power of 10.
Usual form is the conventional way of writing numbers.
Prime factorization is the process of breaking down a number into its prime factors.
The laws of exponents are a set of rules that govern the behavior of exponents when they are multiplied or divided.

Practice Problems

Write $$1.23 \times 10^4$$ in usual form.
Write $$9.56 \times 10^3$$ in standard form.
Factorize $$120$$ into its prime factors.
Express $$120 \times 180$$ as a product of its prime factors in exponential form.
Use the laws of exponents to simplify the expression $$2^3 \times 2^4$$.

Answers

12,300
9,560
$120 = 2^3 \times 3 \times 5$
$120 \times 180 = 2^5 \times 3^4 \times 5^2$
$2^7$