Proportions

Front

What is a proportion?

Back

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

Front

How do you solve a proportion?

Back

To solve a proportion, cross-multiply the terms and then solve for the unknown variable.

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.

Front

If 3 apples cost $1.50, how much do 12 apples cost?

Back

$6.00

Front

What is the formula for finding a unit rate?

Back

To find a unit rate, divide the first quantity by the second quantity.

Front

If a car travels 60 miles in 1 hour, how far will it travel in 3 hours?

Back

180 miles

Front

What does it mean if two ratios are equivalent?

Back

It means that they represent the same relationship between quantities.

Front

If the ratio of cats to dogs is 4 to 5 and there are 20 cats, how many dogs are there?

Back

25 dogs

Front

What is the cross-multiplication method?

Back

Cross-multiplication is a method used to solve proportions by multiplying the numerator of one ratio by the denominator of the other ratio.

Front

If 5 pounds of flour cost $10, how much does 1 pound cost?

Back

$2.00