Module 2 Topic 1 Ratios

What is a ratio?

• A comparison of two quantities using multiplication

• A comparison of two quantities using subtraction

• A comparison of two quantities using addition

• A comparison of two quantities using division

In the paint mixing example, what is the ratio of blue to yellow paint?

• 5 parts blue to 2 parts yellow

• 2 parts blue to 5 parts yellow

• 2 parts blue to 3 parts yellow

• 3 parts blue to 2 parts yellow

If you have 2 parts of blue paint and 5 parts of yellow paint, what is the part-to-whole ratio for blue paint?

• 5 out of 7

• 2 out of 5

• 5 out of 2

• 2 out of 7

What is the part-to-whole ratio for yellow paint in the mixture?

• 5 out of 7

• 5 out of 2

• 2 out of 7

• 2 out of 5

What happens when you flip the units in a part-to-part ratio?

• The ratio remains the same

• The ratio becomes a part-to-whole ratio

• The ratio becomes invalid

• The order of the quantities is reversed