Pre-Algebra : Operations and Properties

Study concepts, example questions & explanations for Pre-Algebra

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Example Questions

Example Question #421 : Operations And Properties

Which of the following statements demonstrates the inverse property of addition?

Possible Answers:

None of the examples in the other responses demonstrates the inverse property of addition.

Correct answer:

Explanation:

The inverse property of addition states that for every real number, a number exists, called the additive inverse, such that the number and its inverse have sum 0. Of the statements given, only 

demonstrates this property, so it is the correct choice.

Example Question #422 : Operations And Properties

What is the additive inverse of 30?   

Possible Answers:

Correct answer:

Explanation:

The question asks us what number added with 30 will equal zero.  Write the mathematical equation that represents this scenario.

Subtract 30 from both sides.

Example Question #423 : Operations And Properties

Which of the following displays the additive inverse property?

Possible Answers:

Correct answer:

Explanation:

The additive inverse property is when two numbers added together equal zero.  So,

displays that property.

Example Question #1 : Multiplicative Identity Property

What property can be applied to the following expression?

Possible Answers:

Distributive Law

Associative of Multiplication

Commutative of Addition

Multiplicative Inverse

Multiplicative Identity

Correct answer:

Multiplicative Identity

Explanation:

The rule for Multiplicative Identity Property is

Expression given in the question is: 

Hence the property is Multiplicative Identity.

Example Question #2 : Multiplicative Identity Property

Which of the following demonstrates the multiplicative inverse property?

Possible Answers:

Correct answer:

Explanation:

The multiplicative inverse property states that for some value ,

.

Therefore, the statement demonstrating the multiplicative inverse property is

.

 

Example Question #3 : Multiplicative Identity Property

Which of the following statements demonstrates the identity property of multiplication?

Possible Answers:

None of the examples in the other responses demonstrates the identity property of multiplication.

Correct answer:

Explanation:

The identity property of multiplication states that there is a number 1, called the multiplicative identity, that can be multiplied by any number to obtain that number. Of the four statements, 

demonstrates this property.

Example Question #2 : Multiplicative Identity Property

Which property does the equation below represent?

Possible Answers:

Multiplicative Identity Property

Distributive Property

Communitive Property of Multiplication

Associative Property of Multiplication

Zero Property of Multiplication

Correct answer:

Multiplicative Identity Property

Explanation:

When something is multiplied by the number one it remains the same number. Therefore when multiplying by one it creates its own identity.

Multiplicative Identity Property

Example Question #3 : Multiplicative Identity Property

Which equation shows an example of the multiplicative identity property?

Possible Answers:

Correct answer:

Explanation:

The multiplicative identity property means that when something is multiplied by 1 then it will remain the same as the other number.

Example Question #4 : Multiplicative Identity Property

Which of the following displays the multiplicative identity property?

Possible Answers:

Correct answer:

Explanation:

The multiplicative identity property states that when you multiply a number by 1, the answer is the original number. 

Therefore, 

 

displays the multiplicative identity property.

Example Question #1 : Multiplicative Inverse Property

Simplify.

Possible Answers:

Correct answer:

Explanation:

To simplify a compound fraction, multiply the numerator by the reciprocal of the denominator. Remember that a compound fraction can easily be rewritten as a division problem!

Solve the multiplication.

Now we need to reduce the fraction to find our final answer.

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