Math Scale Factor

Front

What is a scale factor?

Back

A scale factor is a number that scales, or multiplies, a quantity. It is used to determine how much larger or smaller a figure is compared to the original.

Front

If a scale drawing is 8 units wide and the original is 4 units wide, what is the scale factor?

Back

2:1

Front

What does a scale factor greater than 1 indicate about the new figure?

Back

The new figure will be an enlargement.

Front

What does a scale factor less than 1 indicate about the new figure?

Back

The new figure will be a reduction.

Front

If the scale factor from ΔDEF to ΔABC is 1/2, what does this mean?

Back

ΔABC is half the size of ΔDEF.

Front

What is the scale factor from MNOP to ABCD if it is 3/2?

Back

The figure ABCD is 1.5 times larger than MNOP.

Front

How do you calculate the scale factor between two similar figures?

Back

Divide the length of a side of the new figure by the length of the corresponding side of the original figure.

Front

What is the scale factor if a figure is enlarged from 5 cm to 15 cm?

Back

The scale factor is 3.

Front

What is the scale factor if a figure is reduced from 10 cm to 4 cm?

Back

The scale factor is 2/5.

Front

If a scale factor is 1:3, how does the new figure compare to the original?

Back

The new figure is one-third the size of the original.