Scale Factor Practice

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 ratio of the dimensions of a scale drawing to the actual object.

Front

How do you find the scale of a drawing?

Back

To find the scale of a drawing, divide the actual length of the object by the length of the drawing. The result will give you the scale in the form of '1 inch = _ units'.

Front

If a drawing of a soccer field is 14 inches long and the actual field is 98 yards long, what is the scale?

Back

1 inch = 7 yards.

Front

What is the scale used if 5 inches on a map represents 210 miles?

Back

1 inch = 42 miles.

Front

How do you calculate the actual distance using a map scale?

Back

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

Front

If a map scale is 2 inches = 40 miles, what is the actual distance for 4.125 inches on the map?

Back

82.5 miles.

Front

What does a scale factor of 2:1 mean?

Back

It means the drawing is twice as large as the actual object.

Front

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

Back

2:1.

Front

What is the scale factor if the original triangle is larger than the scaled triangle?

Back

The scale factor will be less than 1.

Front

If a triangle on the left is the original and the scale factor is 1/2, what does that mean?

Back

It means the triangle on the right is half the size of the original triangle.