Black Belt Review Flashcard

Front

What is the ratio of green marbles to blue marbles in a bag containing 5 blue and 10 green marbles?

Back

The ratio of green marbles to blue marbles is 2:1.

Front

If 6 sodas cost $3.00, what is the cost of 1 soda?

Back

The cost of 1 soda is $0.50.

Front

How many yellow balls are there for every red ball in a box containing 12 red balls and 24 yellow balls?

Back

There are 2 yellow balls for every red ball.

Front

What is the unit rate of a train that travels 1,230 miles in 5 hours?

Back

The unit rate is 246 miles per hour.

Front

If a plane covers 2,400 miles in 4 hours, what is the unit rate per hour?

Back

The unit rate is 600 miles per hour.

Front

Define 'unit rate'.

Back

A unit rate is a comparison of two different quantities when they are combined together, expressed as a quantity of one.

Front

What is the formula to calculate the unit rate?

Back

Unit Rate = Total Quantity / Number of Units.

Front

If a recipe requires 3 cups of flour for 4 servings, how much flour is needed for 1 serving?

Back

You need 0.75 cups of flour for 1 serving.

Front

What is a ratio?

Back

A ratio is a relationship between two numbers indicating how many times the first number contains the second.

Front

How do you simplify a ratio?

Back

To simplify a ratio, divide both terms by their greatest common divisor.