Ratios
A ratio is....
What is
A comparison of two things with the same units
A rate is...
What is
A comparison of two things with different units
Ratio tables have what kind of pattern/relationship?
What is
Multiplicative
What is
A comparison of something to ONE unit of another
If 10 apples cost $5, what is the unit price per apple?
What is
$0.50 per apple
Write the ratio of red marbles to blue marbles if there are 6 red and 9 blue. Express it three ways.
What is
6:9
6 to 9
6 to 9
A printer can print 45 pages in 5 minutes. What is the unit rate in pages per minute?
What is
9 pages per minute
Fill in the missing value in the ratio table if the ratio is
2 3
6 ?
What is
9
Who is driving faster: Dan who drove 300 miles in 5 hours or Jon who drove 490 miles in 7 hours?
What is
Jon
A bus travels 150 miles on 5 gallons of fuel. What is the unit rate in miles per gallon?
What is
30 miles per gallon
A recipe calls for 2 cups of flour for every 3 cups of sugar. If you use 4 cups of flour, how many cups of sugar should you use?
What is
6 cups of flour
A gardener waters 18 plants in 3 hours. At that rate, how many plants can be watered in 9 hours?
What is
54 plants in 9 hours
Create a ratio table for the equivalent ratios 4:5 with up to 20 in the first column.
What is
4 5
8 10
12 15
16 20
20 25
Who runs slower: Polly who ran 8 miles in 48 minutes or Lacey who ran 5 miles in 25 minutes?
What is
Lacey
Compare two unit rates:
Store A sells 6 cookies for $3.00.
Store B sells 10 cookies for $5.25.
Which store has the better unit price per cookie?
What is
Store A
There are 24 students: 10 are boys and 14 are girls. Give the ratio of boys to the girls class.
What is
10 to 14
A runner covers 60 kilometers in 30 minutes. What is this rate as kilometers per minute.
2 kilometers per minute
Given this ratio table for pencils to boxes:
2 1
4 2
6 3
8 ?
Find the missing value and explain the pattern
What is
?=4
Pattern divide by 2 across
You buy 3.5 pounds of grapes for $7.00. What is the unit price per pound?
What is
$2 per pound
There are 24 students: 10 are boys and 14 are girls. Give the ratio of girls to the whole class.
What is
14:24
A car uses 9 gallons of gas to travel 270 miles. Find the unit rate in miles per gallon and then find how many miles you can drive with 18 gallons of gas
What is
30 miles per gallon
540 miles
A worker completes 45 widgets in 3 hours.
Find the unit rate in widgets per hour and then find how many hours to make 120 widgets at that rate.
What is
15 widgets per hour
8 hours