Calculating the Perimeter of Rectangles

This video tutorial introduces the concept of perimeter, explaining its definition and real-life applications. It covers various methods to calculate the perimeter of a rectangle, including adding all sides, using the formula 2 times length plus 2 times width, and another strategy involving multiplication. The video provides practice problems for viewers to apply these strategies and concludes with encouragement to explore more math concepts.

What is the definition of perimeter?

• The area inside a shape

• The volume of a three-dimensional object

• The length of one side of a shape

• The total distance around a two-dimensional shape

Why is knowing the perimeter important?

• To determine the length of fence needed for a yard

• To find out how much carpet is needed for a room

• To measure the height of a building

• To calculate the amount of paint needed for a wall

How can you calculate the perimeter of a rectangle?

• Add all four sides together

• Subtract the width from the length

• Multiply the length by the width

• Divide the area by one of the sides

Tags

CCSS.4.MD.A.3

What is another method to find the perimeter of a rectangle?

• Length minus width times 2

• Length times width

• 2 times length plus 2 times width

• Length plus width divided by 2

Tags

CCSS.4.MD.A.3

What is the third method mentioned for finding the perimeter?

• Subtract width from length and multiply by 2

• Multiply the sum of length and width by 2

• Add length to width and divide by 2

• Divide the product of length and width by 2

Tags

CCSS.4.MD.A.3

How do you calculate the perimeter of a new enclosure with lengths of 50 yards and widths of 20 yards?

• 50 + 20 + 50 + 20

• 2 * (50 + 20)

• 50 * 20

• 2 * 50 + 2 * 20

Tags

CCSS.4.MD.A.3

Using the second strategy, what is the perimeter of a rollercoaster area with 200 feet in length and width?

• 2 * (200 + 200)

• 200 * 2 + 200 * 2

• 200 + 200

• 400 + 400

Tags

CCSS.4.MD.A.3

What is the perimeter of a log flume with 48 meters in length and 45 meters in width?

• 48 * 2 + 45 * 2

• 2 * (48 + 45)

• 48 + 45

• 48 * 45

Tags

CCSS.4.MD.A.3

What is the perimeter of a chalkboard that is 6 feet long and 3 feet wide?

• 6 + 3

• 2 * (6 + 3)

• 6 * 3

• 6 * 2 + 3 * 2

Tags

CCSS.4.MD.A.3

Why is practicing different strategies for finding perimeter encouraged?

• To avoid learning the concept thoroughly

• To discover the strategy that works best for you

• To find the most time-consuming method

• To make math more complicated

Tags

CCSS.3.MD.D.8