Writing Equivalent Expressions using Identity Properties

This video tutorial explains how to use the additive identity property of 0 and the multiplicative identity property of 1 to write equivalent expressions. It covers the difference between numerical and algebraic expressions, provides examples of using identity properties, and demonstrates how to find equivalent expressions and fractions using these properties.

What is the additive identity property?

• Adding 1 to any number keeps it the same.

• Multiplying any number by 0 keeps it the same.

• Adding 0 to any number keeps it the same.

• Multiplying any number by 1 keeps it the same.

Which of the following is true about the multiplicative identity?

• It changes the value of the expression.

• It is the number 0.

• It is used to add numbers.

• It is the number 1.

How does the additive identity affect an algebraic expression?

• It halves the value of the expression.

• It doubles the value of the expression.

• It keeps the expression unchanged when added.

• It changes the variable to zero.

What is an equivalent fraction for 2/3 using the multiplicative identity?

• 8/12

• 4/6

• 3/4

• 2/6

How can you use the multiplicative identity to find an equivalent expression for y divided by 3?

• Add 1 to y divided by 3.

• Multiply y divided by 3 by 0.

• Multiply y divided by 3 by 1.

• Add 0 to y divided by 3.