Ratios & Ratio Tables

Front

What is a ratio?

Back

A ratio is a comparison of two quantities, showing how many times one value contains or is contained within the other.

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

How do you write a ratio?

Back

Ratios can be written in three ways: as a fraction (1/2), with a colon (1:2), or with the word 'to' (1 to 2).

Tags

CCSS.6.RP.A.1

CCSS.6.RP.A.2

Front

What is a ratio table?

Back

A ratio table is a table that shows the relationship between two quantities and helps to find equivalent ratios.

Front

How do you find a missing value in a ratio table?

Back

To find a missing value, you can use equivalent ratios or cross-multiplication.

Front

What is the purpose of solving proportions?

Back

Solving proportions helps to find unknown values in ratio relationships.

Tags

CCSS.7.RP.A.2C

Front

If the ratio of A to B is 2:3, what is the value of B if A = 8?

Back

B = 12, because 8 is 2/5 of the total ratio (2+3), and you multiply by 3.

Front

What does it mean if two ratios are equivalent?

Back

Two ratios are equivalent if they represent the same relationship between quantities.

Tags

CCSS.6.RP.A.3A

Front

How can you check if two ratios are equivalent?

Back

You can check by cross-multiplying the ratios and seeing if the products are equal.

Tags

CCSS.6.RP.A.3A

Front

What is the missing number in the ratio table if the ratio is 4:5 and the known value is 20?

Back

The missing number is 25, because 20/4 = 5 and 5*5 = 25.

Front

What is a proportion?

Back

A proportion is an equation that states that two ratios are equal.

Tags

CCSS.7.RP.A.2A