Ratio & Unit Rate

A ratio is a comparison of two or more quantities in the same category. Example: A ratio of boys to girls or A ratio of apples to oranges A ratio of cars to trucks BACK

Either way, you read it as three to five A ratio can be written three ways: 3:5 3/5 3 to 5 Either way, you read it as three to five BACK

Ratios are often expressed as fractions in simplest form or as a decimal. BACK

What ratios can we form from the tiles above? Order matters! What you say is what you write. If you say green to blue, you write green to blue: 12 to 8 What ratios can we form from the tiles above? 12 to 8 BACK

Create as many ratios as possible Create as many ratios as possible. Write each ratio three different ways. BACK

Simplest Form Write the ratio 50 to 300 in simplest form. BACK

Simplest Form Write the ratio 60 to 12 in simplest form. BACK

Rate Rate: A comparison of two quantities that have different units of measure. You are comparing unlike things (often time, but not always!) Miles per Hour Cost per Pound Words per Minute BACK

Unit Rate A Unit Rate is a rate simplified so that one of the quantities equals 1. Ex. You want to know the cost or amount for 1. BACK

Unit Rate If it takes 10 gallons to drive 250 miles, What is the unit rate or m.p.g.? 250 10 = 25 1 BACK

Unit Rate If it costs $78 for 13 sandwiches, What is the unit rate? 78 13 = 6 1 BACK

Mile per Gallon M.P.G. stands for miles per gallon and is usually used for gas mileage in cars. BACK

Find the ratio of pizzas to Doritos. Now you try it! Last month Tim ate 4 pizzas, 6 burgers, 5 hotdogs and 10 bags of Doritos. Find the ratio of pizzas to Doritos. Find the ratio of hotdogs to the total foods Tim ate. BACK

A pet store sold 3 parakeets, 12 gold fish, and 6 turtles last week. Now you try it! A pet store sold 3 parakeets, 12 gold fish, and 6 turtles last week. Find the ratio of parakeets to turtles. Find the ratio of turtles to gold fish. Find the ratio of gold fish to the total pets sold. BACK

What kind of ratio is this? Now you try it! Marco’s family drove 320 miles yesterday. It took them 8 hours. How many miles did they travel per hour? What kind of ratio is this? BACK