Finding the Area of Irregular Shapes

What is the initial shape mistaken for before realizing it is an L-shape?

• Circle

• Rectangle

• Triangle

• Square

Tags

CCSS.1.G.A.2

How many smaller rectangles is the L-shaped room divided into for calculation?

• Four

• One

• Three

• Two

Tags

CCSS.3.MD.C.7D

What is the area of the smaller rectangle if its dimensions are 4 ft by 4 ft?

• 32 sq ft

• 64 sq ft

• 16 sq ft

• 8 sq ft

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

What is the area of the larger rectangle if its dimensions are 8 ft by 4 ft?

• 64 sq ft

• 12 sq ft

• 32 sq ft

• 16 sq ft

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

How do we find the total area of the L-shaped room using the first method?

• By multiplying

• By subtracting

• By dividing

• By adding

Tags

CCSS.3.MD.C.7D

What property allows the expression '4 * 4 + 8 * 4' to be rewritten as '4 * (4 + 8)'?

• Identity Property

• Distributive Property

• Commutative Property

• Associative Property

Tags

CCSS.3.OA.B.5

What is the total area of the L-shaped room using the addition method?

• 80 sq ft

• 96 sq ft

• 64 sq ft

• 48 sq ft

Tags

CCSS.3.MD.C.7D

In the subtraction method, what is the area of the larger encompassing rectangle?

• 80 sq ft

• 64 sq ft

• 48 sq ft

• 32 sq ft

What is the area of the unshaded smaller rectangle subtracted in the second method?

• 32 sq ft

• 16 sq ft

• 64 sq ft

• 48 sq ft

What is the final calculated area of the L-shaped room using the subtraction method?

• 64 sq ft

• 96 sq ft

• 48 sq ft

• 80 sq ft

Tags

CCSS.3.MD.C.7D