Introduction to Rates and Unit Rates

What is a unit rate?

• A simplified rate.

• A simplified ratio.

• A simplified rate so that the denominator is one.

• A simplified rate so that the numerator is one.

What is a rate?

• A ratio of two measures having different units.

• Another name for a ratio.

• A comparison between two quantities

• A simplified rate so that it has a denominator of one.

A ratio can be written in the three ways shown in the image.

• true

• false

• sometimes

In the fruit bowl there are 4 apples, 2 bananas, and 5 pears.  What is the ratio of pears to ALL fruit?

• 5:4

• 5:11

• 2:5

• 6:5

Lynnette can wash 95 cars in 5 days. How many cars does she wash each day?

• 475 cars per day

• 19 cars per day

• .05 cars per day

• 15 cars per day

Which rate is equivalent to 15 miles per hour?

• 30 miles in 3 hours

• 30 miles in 2 hours

• 30 miles in 5 hours

A package of two 120-page notebooks sells for $2.29. A package of three 100-page notebooks sells for $2.49. Which is the better buy and why?

• Package of two 120-page notebooks because the price per notebook is less than the price per notebook for three 100-page notebooks.

• Package of two 120-page notebooks because you can buy 1.145 notebooks per dollar.

• Package of three 100-page notebooks because you can buy 0.83 notebooks per dollar.

• Package of three 100-page notebooks because the price per page is less than the price per page for the two 120-notebooks.

Hilbert burns 120 calories per 30 minutes of weight training.  Complete the table to chart his calorie expenditure for different amounts of time. What is the value of a?

• a= 80

• a= 6

• a= 60

• a= 120

If Kevin is mixing 35 oz of yellow paint, he will need how many oz of red?

• 21 oz

• 24 oz

• 33 oz

• 18 oz

What is the missing number in the ratio table?

• 72

• 85

• 76

• 90