300
Use the distributive property to write two number sentences for finding the area of the shaded part of the following rectangle. (height = 3, whole base = 12, part base unshaded = 4)
___12__
3 [__|||||||]
4
What is 3 x (12 - 4) = 24 units squared
3 x 12 - 3 x 4 = 24 units squared