Properties

Note: This is NOT the video lesson page. If you are trying to watch a video lesson for homework, click here: https://sites.google.com/a/kcsd96.org/mrs-didech/lessons/video-lessons

Commutative Property of Addition: In a sum, we can add the terms in any order.

• a + b = b + a

Commutative Property of Multiplication: In a product, we can multiply the terms in any order.

• ab = ba

Associative Property of Addition: In a sum, we can change the grouping of terms.

• (a + b) + c = a + (b + c)

Associative Property of Multiplication: In a product, we can change the grouping of terms.

• (ab)c = a(bc)

Identity Property of Addition: We can add any term to the additive identity (0) and the sum will be the original term.

• a + 0 = a

Identity Property of Multiplication: We can multiply any term by the multiplicative identity (1) and the product will be the original term.

• a(1) = a

Distributive Property: We can distribute the term outside of the parentheses to the terms inside the parentheses.

• a(b + c) = a(b) + a(c)

Students Teaching Students

Christine (Properties Slide Show)

Chris (Distributive Properties Video Lesson)