Scale Factor

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 figure is compared to another figure.

Front

If the scale factor is 4, what is the new measurement if the original measurement is 6 m?

Back

24 m (6 m x 4 = 24 m)

Front

What happens to a figure when the scale factor is less than 1?

Back

The figure is reduced in size.

Front

What is the scale factor from a rectangle with dimensions 4 m by 6 m to a rectangle with dimensions 8 m by 12 m?

Back

2 (The dimensions are doubled.)

Front

If the scale factor is 1/2, what is the new measurement if the original measurement is 10 m?

Back

5 m (10 m x 1/2 = 5 m)

Front

What is the scale factor from triangle ABC to triangle DEF if the sides of ABC are 3 cm and the corresponding sides of DEF are 6 cm?

Back

2 (The sides are doubled.)

Front

If a figure is enlarged by a scale factor of 3, what is the relationship between the areas of the original and new figures?

Back

The area of the new figure is 9 times larger than the area of the original figure.

Front

What is the scale factor from a small model to a real object if the model is 1/10 the size of the object?

Back

10 (The model is scaled down by a factor of 10.)

Front

If the scale factor is 3, what is the new perimeter of a shape with an original perimeter of 5 m?

Back

15 m (5 m x 3 = 15 m)

Front

What is the scale factor from a square with a side length of 2 m to a square with a side length of 4 m?

Back

2 (The side length is doubled.)