Area of rectangles

To find area, I need to ​ (a)   the ​ (b)   and ​ (c)   .

• multiply
• length
• width
• inches
• add
• side

Tags

3.6C

The length is ​ (a)   and the width is ​​ (b)   . The area is ​ (c)   .

• 3 units
• 6 units
• 18 sq units
• 9 sq units
• 18 units

Tags

3.6C

Match the rectangle to the correct area.

• 48 sq cm

• 
• 16 sq cm

• 
• 24 sq cm

• 

Tags

3.6C

Patricia draws a rectangle that has side lengths of 4 centimeters and 9 centimeters. What is the area of

the rectangle?

• 13 cm

• 13 sq cm

• 36 cm

• 36 sq cm

Answer explanation

The answer is 36 square centimeters. When you multiply the length of 4 cm with the width of 9 cm, you get 4cm x 9cm = 36 square cm.

Tags

3.6C

Charles draws a rectangle with a side length of 9 inches and an area of 27 square inches. What is the

other side length? How do you know? Explain all of your thinking.

Answer explanation

The other side length of the rectangle is 3 inches. The area is 27 square inches and the known side length is 9 inches. To solve for the missing side length you, use one of two equations: 27/9=? or 9 x_= ?

Tags

CCSS.3.MD.C.5

CCSS.3.MD.C.6

CCSS.3.MD.C.7

CCSS.3.OA.A.3

CCSS.3.OA.A.4

CCSS.3.OA.B.6

Miss Cox is putting square stickers on a rectangular poster. Each sticker has an area of one square inch. She has already put stickers on the poster. What is the area of the poster in square inches?

• 56 square inches

• 42 square inches

• 48 square inches

• 15 square inches

Tags

3.6C

What is the missing side length? What equation could you use to solve for the missing side length?

• 8 ft

• 6 ft

• 21 ft

Tags

CCSS.3.MD.C.5

CCSS.3.MD.D.8

CCSS.3.OA.A.3

CCSS.3.OA.A.4

CCSS.3.OA.B.6

Type an equation to solve for the missing side length.

Mathematical Equivalence

ON

Tags

CCSS.3.MD.C.5

CCSS.3.OA.A.2

CCSS.3.OA.A.3

CCSS.3.OA.A.4

CCSS.3.OA.B.6