Scale and Ratio

Is Figure B a scaled copy of Figure A?

• Yes

• No

Which of the following are scaled copies of the original image? Select ALL that apply

• A

• B

• C

• D

What is the scale factor from ΔDEF (bigger) to ΔABC (smaller)?

• 2

Kevin is mixing paint to make orange. The ratio of red paint to yellow paint is 3 oz to 5 oz. How much yellow paint should he mix with 9 oz of red paint?

• 15 oz

• 30 oz

• 45 oz

• 11 oz

If a scale model of a building is made with a scale factor of 1:100, and the model is 2 feet tall, how tall is the actual building?

• 200 feet

• 100 feet

• 50 feet

• 20 feet

Dividing two related amounts by the same number

• Scaling Down

• Scaling Up

• Unit Scale

• Cost Rate

A unit rate is a ratio in which the second quantity is 1.

• True

• False

example 0,1

With scale drawings, you can divide the scale to get a SCALE FACTOR. This scale factor is the same as __________

• multiplying

• ratio

• the scale drawing

• the unit rate

A model ship is 30cm long and the actual ship is 150m long. What is the scale?

• 1cm:5m

• 1cm:3m

• 1cm:50m

• 1cm:150m