Properties of Addition and SubtractionToday you will learn to:• use the Commutative, Associative, Identity, and Inverse Properties of Addition and Subtraction

M07.A-N.1.1.1: To apply properties of operations to add and subtract rational numbers, including real-world contexts.

Warm-up Problem: Warm-up Problem: Properties of Addition and Properties of Addition and SubtractionSubtractionThere is a prize for selling the most tickets to the school play. Albert, Belle and Charlie are the leaders. Albert sold 42 the first week, 59 the second week and 78 the third week. Belle sold 59 the first week, and 78 the second week but has a disappointing third week, with only 42 sold. The first week, Charlie sold 78, the second week he sold 59, and the third week he also sold 42. Who wins the prize?

Commutative Property of Addition

Associative Property of Addition

Identity Property of Addition

Inverse Property of Addition