Scale & Scale Drawings

Front

What is a scale factor?

Back

A scale factor is a number that scales, or multiplies, some quantity. It is used to determine how much larger or smaller a scale drawing or model is compared to the actual object.

Tags

CCSS.7.G.A.1

Front

How do you calculate the new perimeter of a shape when enlarged by a scale factor?

Back

To find the new perimeter, multiply the original perimeter by the scale factor.

Tags

CCSS.7.G.A.1

Front

If a triangle is scaled down by a factor of 1/2, what happens to its dimensions?

Back

All dimensions (length, width, height) of the triangle are halved.

Tags

CCSS.8.G.A.3

Front

What is the relationship between the scale factor and the area of a shape?

Back

The area of a shape is scaled by the square of the scale factor. For example, if the scale factor is 2, the area increases by a factor of 2² = 4.

Tags

CCSS.7.G.A.1

Front

If a model is built at a scale of 1 inch to 5 feet, how do you convert inches to feet?

Back

Multiply the number of inches by 5 to convert to feet.

Tags

CCSS.7.G.A.1

Front

What is the scale of a drawing if a 10 ft object is represented as 2 inches?

Back

The scale is 1 inch to 5 feet.

Tags

CCSS.7.G.A.1

Front

How do you find the actual size of an object from a scale drawing?

Back

Multiply the dimensions in the drawing by the scale factor to find the actual size.

Tags

CCSS.7.G.A.1

Front

What is the scale factor if a rectangle's length is doubled?

Back

The scale factor is 2.

Tags

CCSS.7.G.A.1

Front

If a model of a car is 3 inches long and the actual car is 12 feet long, what is the scale?

Back

The scale is 1 inch to 4 feet.

Tags

CCSS.7.G.A.1

Front

What happens to the volume of a shape when it is scaled by a factor of 3?

Back

The volume increases by a factor of 3³ = 27.

Tags

CCSS.5.MD.C.5B

CCSS.6.G.A.2