Open Up - Grade 7 - Mathematics - Unit 1 - Lesson 9

By Formative Library

Last updated about 2 years ago

An image of a book shown on a website is 1.5 inches wide and 3 inches tall on a computer monitor. The actual book is 9 inches wide.
What scale is being used for the image?

1 Inch to every 8 inches

1 Inch to every 3 inches

1 Inch to every 6 inches 

1 Inch to every 9 inches

3.NF.3.a

7.G.1

5.NBT.3.a

An image of a book shown on a website is 1.5 inches wide and 3 inches tall on a computer monitor. The actual book is 9 inches wide.
How tall is the actual book?

3.NF.3.a

7.G.1

5.NBT.3.a

The flag of Colombia is a rectangle that is 6 ft long with three horizontal strips.
The top stripe is 2 ft tall and is yellow.
The middle stripe is 1 ft tall and is blue.
The bottom stripe is also 1 ft tall and is red.
Pick the answer where the Colombian flag would be a scale of 1 cm to 2 ft.

Flag 2cm long and 1cm tall, Yellow rectangle .5cm tall, both red and blue rectangles are 0.25cm tall.

Flag 1cm long and .5cm tall, Yellow rectangle .25cm tall, both red and blue rectangles are 0.33cm tall.

Flag 4cm long and 2cm tall, Yellow rectangle 2cm tall, both red and blue rectangles are 1cm tall.

Flag 3cm long and 2cm tall, Yellow rectangle 1cm tall, both red and blue rectangles are 0.5cm tall.

3.NF.3.a

7.G.1

5.NBT.3.a

The flag of Colombia is a rectangle that is 6 ft long with three horizontal strips.
The top stripe is 2 ft tall and is yellow.
The middle stripe is 1 ft tall and is blue.
The bottom stripe is also 1 ft tall and is red.
Pick the answer where the Colombian flag would be a scale of 2 cm to 1 ft.

Flag 12 cm long and 8 cm tall, Yellow rectangle 4 cm tall, both red and blue rectangles are 2 cm tall.

Flag 6 cm long and 4 cm tall, Yellow rectangle 2 cm tall, both red and blue rectangles are 1 cm tall.

Flag 9 cm long and 6 cm tall, Yellow rectangle 3 cm tall, both red and blue rectangles are 1.5 cm tall.

Flag 15 cm long and 12 cm tall, Yellow rectangle 6 cm tall, both red and blue rectangles are 2 cm tall.

3.NF.3.a

7.G.1

5.NBT.3.a

These triangles are scaled copies of each other.
For each pair of triangles listed, the area of the second triangle is how many times larger than the area of the first?

		Triangle G and Triangle F
		Triangle G and Triangle B
		Triangle B and Triangle F
		Triangle F and Triangle H
		Triangle G and Triangle H
		Triangle H and Triangle B

3.NF.3.a

7.G.1

5.NBT.3.a

Here is an unlabeled rectangle, followed by other quadrilaterals that are labeled.
Select all quadrilaterals that are scaled copies of the unlabeled rectangle.

3.NF.3.a

7.G.1

5.NBT.3.a