SmubUKgV
3.0
CCSS.Math.Content.3.MD.C.7c
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 × b and a × c. Use area models to represent the distributive property in mathematical reasoning.
160
2020-12-17T17:26:55.732064Z
2020-12-17T17:26:55.732096Z
5