Rates and Ratios

Front

What is a ratio?

Back

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

Front

What is a rate?

Back

A rate is a specific kind of ratio that compares two different units, such as speed (miles per hour) or price (cost per item).

Front

How do you find the Greatest Common Factor (GCF) of two numbers?

Back

To find the GCF, list the factors of each number and identify the largest factor that both numbers share.

Front

How do you find the Least Common Multiple (LCM) of two numbers?

Back

To find the LCM, list the multiples of each number and identify the smallest multiple that both numbers share.

Front

If 4 apples cost $2, what is the unit rate per apple?

Back

The unit rate is $0.50 per apple.

Front

What is the relationship between rates and ratios?

Back

Rates are a type of ratio that compares two different units, while ratios can compare any two quantities.

Front

If a car travels 120 miles in 2 hours, what is its speed in miles per hour?

Back

The speed is 60 miles per hour.

Front

What is the GCF of 20 and 28?

Back

The GCF is 4.

Front

What is the LCM of 10 and 15?

Back

The LCM is 30.

Front

If 12 tomato plants are planted in 30 minutes, how many can be planted in 90 minutes?

Back

36 tomato plants can be planted in 90 minutes.