Exploring Scale Drawings and Proportions

What is a scale drawing?

• A life-size drawing of an object

• A photograph of an object

• A two-dimensional drawing similar to the object it represents

• A three-dimensional model of an object

Which of the following is an example of a scale model?

• A blueprint of a house

• A photograph of a cell

• A model car

• A map of the United States

In a scale, what does the numerator represent?

• The real-life size or distance

• The drawing or model size or distance

• The scale factor

• The total size of the object

If 2 inches on a map represents 500 miles in real life, what is the scale?

• 1:500

• 1:1000

• 1:250

• 1:2500

Given a blueprint scale of 1:42, what is the actual length of a wall that is 3 inches long in the blueprint?

• 3 inches

• 84 inches

• 42 inches

• 126 inches

What is the first step in solving a scale drawing problem?

• Cross-multiplying

• Drawing the object

• Dividing the numbers

• Finding the scale

A model of a space shuttle has a scale of 1:52. If the actual wingspan is 78 feet, what is the model's wingspan?

• 1 foot

• 52 feet

• 78 feet

• 1.5 feet

In a scale drawing, if the real-life object is 8 feet long and the drawing is 3 inches long, what is the scale with units?

• 3 feet to 8 inches

• 8 inches to 3 feet

• 3 inches to 8 feet

• 8 feet to 3 inches

How do you convert 8 feet to inches?

• Add 12

• Multiply by 12

• Multiply by 10

• Divide by 12

What is the simplified ratio of 3 inches to 96 inches?

• 3:96

• 1:32

• 3:32

• 1:96