Applying Ratios and Rates Review

Front

What is a ratio?

Back

A ratio is a comparison of two quantities that shows the relative size of one quantity to another, often expressed as 'a to b' or a:b.

Front

How do you convert meters to centimeters?

Back

To convert meters to centimeters, multiply the number of meters by 100, since 1 meter equals 100 centimeters.

Front

If Emily bikes 15 miles and her mother donates $0.40 for every 0.25 mile, how much will she donate?

Back

To find the total donation, calculate the number of 0.25 miles in 15 miles: 15 ÷ 0.25 = 60. Then multiply by $0.40: 60 × $0.40 = $24.

Front

What is the distance in miles if Jonah’s house and his grandparents’ house are 8,046.72 meters apart?

Back

To convert meters to miles, divide by 1,609.34. 8,046.72 ÷ 1,609.34 ≈ 5 miles.

Front

How many ounces are in 5 pounds?

Back

There are 16 ounces in a pound, so 5 pounds equals 5 × 16 = 80 ounces.

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 unit rate?

Back

To find the unit rate, divide the quantity by the number of units. For example, if a car travels 300 miles in 5 hours, the unit rate is 300 ÷ 5 = 60 miles per hour.

Front

What is the formula for calculating a ratio?

Back

The formula for calculating a ratio is: Ratio = Quantity A / Quantity B.

Front

If a recipe calls for 2 cups of flour for every 3 cups of sugar, what is the ratio of flour to sugar?

Back

The ratio of flour to sugar is 2:3.

Front

How do you solve a proportion?

Back

To solve a proportion, cross-multiply and then divide. For example, if a/b = c/d, then a*d = b*c.