Finding the Area of a Rectangle through Multiplication and Addition

This video tutorial teaches how to calculate the area of a rectangle using multiplication and addition. It begins with a basic introduction to the concept of area and demonstrates how to use multiplication to find the area of a rectangle. The lesson then explores decomposing side measurements to simplify calculations. A practical example is provided where students calculate the area of a wall they need to paint, using both multiplication and addition. The tutorial concludes with a review of the concepts covered.

What is the area of a rectangle with side lengths of 3 feet and 7 feet?

• 14 square feet

• 30 square feet

• 21 square feet

• 10 square feet

How can decomposing a side measurement help in finding the area of a rectangle?

• It makes the rectangle larger.

• It allows for using smaller numbers.

• It changes the shape of the rectangle.

• It reduces the number of rows.

If a rectangle is divided into two sections with side measurements of 4 rows and 5 columns, what is the area of this section?

• 9 square feet

• 12 square feet

• 20 square feet

• 15 square feet

What is the total width of the wall if the blue section is 6 feet and the green section is 3 feet?

• 12 feet

• 9 feet

• 15 feet

• 6 feet

How do you calculate the total area of a wall that is 7 feet tall and 9 feet wide?

• 9 minus 7

• 7 divided by 9

• 7 plus 9

• 7 times 9

Why is it important to add 6 plus 3 before multiplying by 7 in the equation 7 times (6 plus 3)?

• To ensure the correct order of operations.

• To make the numbers larger.

• To change the height of the wall.

• To reduce the number of rows.

What is the total area that the students painted on the wall?

• 63 square feet

• 45 square feet

• 54 square feet

• 72 square feet