Ratios and Proportions

Front

What is a variable?

Back

A lowercase letter that represents an unknown.

Front

What is a ratio?

Back

A comparison of two quantities, often expressed as 'a:b'.

Front

What is a proportion?

Back

An equation that states two ratios are equal.

Front

How do you write a ratio of cats to dogs if there are 2 cats and 5 dogs?

Back

2:5

Front

What is the first step when solving a proportion?

Back

Write a word label.

Front

If there are 20 strawberries and 35 grapes, what is the ratio of strawberries to the total?

Back

20:55

Front

What does it mean to simplify a ratio?

Back

To reduce the ratio to its simplest form by dividing both terms by their greatest common factor.

Front

How can you express the ratio of 12 boys to 8 girls?

Back

3:2 after simplification.

Front

What is the cross-multiplication method used for?

Back

To solve proportions by multiplying the means and extremes.

Front

If 10 out of 50 students prefer math, what is the ratio of students who prefer math to those who do not?

Back

1:4.