2.2.1 Relating Area to Multiplication

​Relating Area to Multiplication

By Jessica Dzurek

Which one does not belong?

​ Think about what you notice as similar and different about each rectangle.

​How would you find the area of the diagram?

​How would you find the area of the diagram?

​How would you find the area of the diagram?

​How would you find the area of the diagram?

Multiple Select

What is the area of the shaded region?

• 2 square units

• 6/4 square units

• 1 ½ square units

• 6 ½ square units

Multiple Select

What 2 expressions match the shaded area of the rectangles?

• ½ x 6

• 1 x 6

• ⅓ x 6

• 6 x 1

Multiple Select

What 2 expressions match the shaded area of the rectangles?

• ½ x 6

• 1 x 6

• ⅓ x 6

• 6 x ½

Multiple Select

What 2 expressions match the shaded area of the rectangles?

• 1 x 6

• 6 x ⅓

• ⅓ x 6

• 6 x ½

Draw

Draw and shade a rectangle with these dimensions.

½ unit by 3 units.

Find the area.

​You can see that ½ of each unit is shaded, and there are 5 units in all. To find the area of the shaded region, you can multiply ½ by 5.

​Since 2 halves make 1 whole, 5 halves will make 2½ wholes.

Labeling

Which images and expressions match the area?

Drag labels to their correct position on the image

1 ½ sq. unit

1 ½ sq. unit

2 sq. unit

2 sq. unit

1 sq. unit

1 sq. unit

½ sq. unit

½ sq. unit

Draw

What is the area of the shaded region?

Turn to page 19 in your activity book.