Whole Number Exponents With Integer Bases

Grade 7 Math Worksheets

In the realm of mathematics, exponents play a fundamental role in expressing repeated multiplication in a concise and efficient manner. When we talk about whole number exponents with integer bases, we delve into a realm of mathematical operations that form the building blocks of numerous mathematical concepts and real-world applications.

What are Whole Number Exponents?

Exponents, also known as powers, are a shorthand notation used to represent the repeated multiplication of a number by itself. Whole number exponents refer to exponents that are positive integers (i.e., 1, 2, 3, 4, and so on).

For example, in the expression a^b, where a is the base and b is the exponent, b must be a whole number.

Integer Bases

An integer base simply refers to the number that is being multiplied by itself according to the exponent. It is the foundation upon which the exponentiation operation is performed. Integer bases can be positive, negative, or zero.

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Whole Number Exponents With Integer Bases - Grade 7 Math Worksheet PDF

This is a free worksheet with practice problems and answers. You can also work on it online.

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Examples of Whole Number Exponents With Integer Bases

1. 2^3

Here, 2 is the base, and 3 is the exponent. It denotes 2 x 2x 2, which equals 8.

2. (-3)^2

In this expression, -3 is the base, and 2 is the exponent. It indicates (-3) x (-3), resulting in 9.

3. 5^0

Even though 5 is the base and 0 is the exponent, the result is not 5. Instead, any non-zero number raised to the power of 0 equals 1. Therefore, 5^0 = 1.

When raising a product to a power, you can distribute the exponent to each factor.

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Applications

1. Scientific Notation: In fields like physics and chemistry, scientific notation uses exponents to represent very large or very small numbers compactly.

2. Compound Interest: The exponential growth formula in finance and economics involves exponents.

3. Computer Algorithms: Exponential complexity often characterizes the time complexity of algorithms, impacting their efficiency.

In summary, understanding whole number exponents with integer bases is crucial for tackling various mathematical problems and real-world scenarios. These foundational concepts pave the way for advanced mathematical exploration and practical applications across diverse fields.

Solved Examples

Here are a few examples of whole-number exponents with integer bases.

1. 2^4

Result: 2^4 = 2 x 2 x 2 x 2 = 16

2. ((-5)^3)

Result: (-5)^3 = (-5) x (-5) x (-5) = -125

3. (7^2)

Result: 7^2 = 7 x 7 = 49

4. 10^5

Result: 10^5 = 10 x 10 x 10 x 10 x 10 = 100,000

5. (-2)^6

Result: (-2)^6 = (-2) x (-2) x (-2) x (-2) x (-2) x (-2) = 64

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Whole Number Exponents With Integer Bases FAQS

What are whole number exponents with integer bases?

Whole number exponents refer to positive integers used as exponents, while integer bases are the numbers being raised to these exponents. For example, in 2^3, 2 is the base, and (3) is the exponent.

What is the result when a negative base is raised to an even exponent?

The result is positive when a negative base is raised to an even exponent. For instance, (-3)^2 = 9.

What happens when an integer base is raised to the power of 0?

Any non-zero integer base raised to the power of 0 equals 1. For example, 5^0 = 1.

How do I multiply two powers with the same base?

You can add their exponents when multiplying two powers with the same base. For instance, a^m x a^n = a^{m+n}.

What is the quotient rule of exponents?

The quotient rule states that when dividing two powers with the same base, you can subtract their exponents. In other words, (a^m)/(a^n) = a^(m-n).

Can I raise a power to another power?

Yes, you can raise a power to another power by multiplying the exponents. This property is known as the power of a power rule: (a^m)^n = a^x m

What is the power of a product rule?

The power of a product rule states that you can distribute the exponent to each factor when raising a product to a power. In mathematical terms, (ab)^n = a^n x b^n.

Where are whole number exponents with integer bases used in real life?

These concepts are used extensively in fields such as physics, engineering, finance, and computer science. They form the basis of scientific notation, compound interest calculations, and algorithmic analysis.

Gloria Mathew writes on math topics for K-12. A trained writer and communicator, she makes math accessible and understandable to students at all levels. Her ability to explain complex math concepts with easy to understand examples helps students master math. LinkedIn

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