Ratios and Proportions

Ratios and Proportions

Thursday 02/10/2022​

By Josephine Bly

Multiple Choice

What is a ratio?

• a comparison of two numbers

• a comparison objects

• a contrast of two numbers

Multiple Select

Select all that apply. If there are 12 girls in 14 boys in Ms. Bly's Math 7class, then describe the ratio of girls to boys.

• 12:14

• 12 to 14

• $$\frac{12}{14}$$  

• 14 to 12

Multiple Choice

What is a rate?

• a ratio with the same units

• a ratio that is proportional

• a ratio with two different units

Multiple Select

Select all that apply. Which of the following are examples of rates?

• miles per hour

• miles per gallon

• dollars per hour

• cents

Ways to compare ratios

Proportions

Why Do We Need Proportions?

What is a proportional relationship?

A proportional relationship consists of two quantities where there exists a constant number (constant of proportionality) such that each measure in the first quantity multiplied by this constant gives the corresponding measure in the second quantity.

Some text here about the topic of discussion

How to we find a proportional relationship?​

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Multiple Select

Select all that apply. What is an equivalent ratio to 2/3?

• 4/6

• 8/12

• 16/24

• 12/15