Show:
Ratios
Rate
Better Buy/Rate/Unit Rate
Equivalent Ratios
100
What are three ways to write a ratio?
a:b, a to b, a/b
100
Define rate.
A special ratio that compares two quantities with different units.
100
Adam spent $2.01 on 3 pounds of bananas. Ben spent $3.45 on 5 pounds of apples. Who had the better buy? Show all work!
Adam.
100
A cookie recipe calls for 1 cup of sugar and 1/2 cup of chocolate chips. Create a table of equivalent ratios (with 5 ratios in each column) that shows the relationship between the number of cups of sugar to the number of cups of chocolate chips.
(1,0.5) (2,1) (3,1.5) (4,2) (5,2.5)
200
What is the difference between a ratio and a rate? Give an example of each.
A rate compares different units of measure while a ratio compares the same units of measure. (Examples vary)
200
If you can read 380 words in 5 minutes, what is your unit rate?
76 words per minute
200
Which is the better buy? 18 pens for $6.84 or 30 pens for $8.40? (Show all work!)
30 pens for $8.40
200
Kristina walks for 4 minutes after every 28 minutes of running. Jenny walks for 3 minutes after every 21 minutes of running. Are their ratios of walking time to running time equivalent? Show your work.
Yes 1/7 = 1/7
300
If there are 14 red Skittles, 15 green Skittles, and 21 purple Skittles, the ratio of green to total is 3:10. True or False?
True: 15:50 simplifies to 3:10
300
Dennis paid $42.98 for 14 gallons of gas. What is the price per gallon?
$3.07 per gallon
300
Which is the best buy? 6 shirts for $25.50 or 5 shirts for $21.00? Show all work.
5 shirts for $21.
300
Which of the following ratio are not equivalent to the ratio 4:9? 16:36, 20:40, 2:5, 24:54?
20:40 and 2:5