Model Ratios
Writing Equivalent Ratios
Are the ratios equivalent?
Unit Rate
Random
100
Write a ratio of yellow to red circles:
3/4, 3:4, 3 to 4
100
Write 1 more Equivalent Ratio:
3:12
1:4
100
Are the Ratios Equivalent?
2/4 = 8/12
No!
100
You buy a 6 pack soda for $2.40. What is the cost of 1 can of soda?
$0.40 per can of soda
100
What is the formula for unit price?
price divided by quantity
200
Write a ratio of yellow to red circles:
5/3, 5:3, 5 to 3
200
Write 1 more Equivalent Ratio:
18:4
9:2
200
Are the Ratios Equivalent?
5/10 = 30/60
x6
Yes!
200
A set of books costs $47.94. There are 6 books in a set. How much is each book?
$7.99 per book
200
What is the formula for constant speed?
distance divided by time
300
Write a ratio of red to blue circles:
5/6, 5:6, 5 to 6
300
Write 2 more Equivalent Ratios:
10:20
1:2, 2:4
300
Are the Ratios Equivalent?
1/2 = 16/18
No!
300
Harry mowed eight lawns and earned $96. How much did he earn for each lawn?
He earned $12 per lawn.
300
What is the definition of a ratio?
a comparison of 2 quantities
400
Write a ratio of squares to diamonds:
15:20, 15:20, 15 to 20
400
Write 3 more Equivalent Ratios:
15:30
1:2, 3:6, 5:10
400
Are the Ratios Equivalent?
13/14 = 39/42
Yes!
400
The pitcher's mound in baseball is 85 m from the plate. It takes 5 seconds for a pitch to reach the plate. How fast is the pitch?
17 m per second
400
What 2 operations can you perform to make an equivalent ratio?
multiplication and division
500
Write a ratio of Blue Circles to all White Shapes:
4/8, 4:8, 4 to 8
500
Write 3 more Equivalent Ratios:
24:72
12:36, 8:24, 6:18, 3:9, 4:12
500
Are the Ratios Equivalent?
8/32 = 32/128
Yes!
500
Every summer Sebastian drives to Michigan. It is 720 miles to get there. If he travels 60 miles per hour, how long will it take for him to get there?
It will take Sebastian 12 hours to get to Michigan.
500
Solve for x to make the Ratios Equivalent:
X/30 = 54/90
x=18