ratios, proportions 7th grade Flashcard

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

What is a proportion?

Back

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

Front

How do you determine if two ratios form a proportion?

Back

Two ratios form a proportion if the cross products are equal.

Front

What is the ratio of 10 to 26?

Back

10:26

Front

If there are 25 wins and 45 losses, what is the ratio of wins to losses?

Back

5:9

Front

What is a unit rate?

Back

A unit rate is a ratio that compares a quantity to one unit of another quantity.

Front

What is the unit rate for 60 miles in 1 hour?

Back

60 miles/1 hour is the unit rate.

Front

If 10 students want hot dogs and 26 want hamburgers, what is the ratio of hot dogs to hamburgers?

Back

10:26

Front

What is the missing number in the ratio 12:___?

Back

The missing number is 12.

Front

How do you simplify the ratio 10:26?

Back

Divide both numbers by their greatest common divisor, which is 2, resulting in 5:13.