3rd Grade Common Core: 3.MD.7c

Common Core Identifier: 3.MD.7c / Grade: 3

Curriculum: Measurement And Data: Geometric Measurement: Understand Concepts Of Area And Relate Area To Multiplication And To Addition.

Detail: Use tiling to show in a concrete case that the area of a rectangle with whole-number side lengths a and b + c is the sum of a x b and a x c. Use area models to represent the distributive property in mathematical reasoning.