Calculating the Area of Rectangles

What is the formula for finding the area of a rectangle?

• Area = base / height

• Area = base - height

• Area = base * height

• Area = base + height

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

If a rectangle has a base of 5 cm and a height of 3 cm, what is its area?

• 8 cm²

• 20 cm²

• 15 cm²

• 10 cm²

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

Why do we use square units when measuring area?

• Because it is a standard convention

• Because it looks better

• Because area is a two-dimensional measurement

• Because it is easier to calculate

Tags

CCSS.3.MD.C.5A

How many square centimeters are there in a rectangle with a base of 5 cm and a height of 3 cm?

• 20 cm²

• 10 cm²

• 25 cm²

• 15 cm²

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

If the base of a rectangle is in centimeters and the height is in millimeters, what should you do first?

• Ignore the units

• Multiply the two measurements directly

• Convert one of the measurements to the same unit

• Add the two measurements

Tags

CCSS.4.MD.A.2

Convert 120 millimeters to centimeters.

• 12 cm

• 1.2 cm

• 1200 cm

• 0.12 cm

Tags

CCSS.5.MD.A.1

What is the area of a rectangle with a base of 3 cm and a height of 12 cm?

• 24 cm²

• 30 cm²

• 36 cm²

• 40 cm²

Tags

CCSS.3.MD.C.7B

CCSS.4.MD.A.3

How do you find the area of a compound shape made of two rectangles?

• Multiply the areas of the two rectangles

• Subtract the area of one rectangle from the other

• Add the areas of the two rectangles

• Divide the area of one rectangle by the other

Tags

CCSS.3.MD.C.7D

If one rectangle in a compound shape has an area of 20 cm² and the other has an area of 35 cm², what is the total area?

• 65 cm²

• 75 cm²

• 45 cm²

• 55 cm²

Tags

CCSS.3.MD.C.7D

What should you do after calculating the areas of individual rectangles in a compound shape?

• Divide the areas

• Multiply the areas

• Add the areas

• Subtract the areas

Tags

CCSS.3.MD.C.7D