Scale Factor Review

Front

What is a scale factor?

Back

A scale factor is a number that scales, or multiplies, some quantity. It is used to determine the proportional relationship between two similar figures or between a drawing and the actual object.

Tags

CCSS.7.G.A.1

Front

How do you calculate the real length from a scale drawing?

Back

To calculate the real length from a scale drawing, multiply the length on the drawing by the scale factor.

Tags

CCSS.7.G.A.1

Front

If a map has a scale of 1cm : 3 miles, how do you find the actual distance if the distance on the map is given?

Back

Multiply the distance on the map by the scale factor (3 miles per cm) to find the actual distance.

Tags

CCSS.7.RP.A.2C

Front

What is the formula to convert map distance to actual distance?

Back

Actual Distance = Map Distance × Scale Factor.

Tags

CCSS.7.G.A.1

Front

What does a scale factor greater than 1 indicate?

Back

A scale factor greater than 1 indicates an enlargement of the figure.

Tags

CCSS.8.G.A.3

Front

What does a scale factor less than 1 indicate?

Back

A scale factor less than 1 indicates a reduction of the figure.

Tags

CCSS.8.G.A.3

Front

In a scale drawing, if a side measures 10 inches and the scale factor is 5, what is the real length?

Back

The real length is 10 inches × 5 = 50 inches.

Tags

CCSS.7.G.A.1

Front

How do you determine the distance on a map if you know the actual distance and the scale?

Back

Divide the actual distance by the scale factor to find the distance on the map.

Tags

CCSS.7.G.A.1

Front

What is the scale factor if a small fry is 2 inches and a large fry is 6 inches?

Back

The scale factor is 6 inches / 2 inches = 3.

Tags

CCSS.7.G.A.1

Front

If a drawing is made to a scale of 1:100, what does this mean?

Back

It means that 1 unit on the drawing represents 100 units in reality.

Tags

CCSS.7.G.A.1