Ratio Models
Writing Equivalent Ratios
Are the ratios equivalent?
Solve Equivalent Ratios
Word Problem
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?
5:10 = 10:5
No!
Which one has more needs to stay more
100
What number should replace "?" to make the Ratios Equivalent: Show how you got your answer.
?:5 = 8:10
? = 4
100
A cleaning crew can clean 5 offices in 6 hours. How many offices can they clean in 12 hours. Use a diagram to show you got your answer.
10 offices
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?
2:4 = 3:5
No!
200
What number should replace "?" to make the Ratios Equivalent: Show how you got your answer.
3:9 = 9:x
? = 27
200
Joe is planting a vegetable garden. He plants 2 tomato plants for every 5 pepper plants. If Joe plants 14 tomato plants, how many pepper plants does he plan? Use a diagram to show you got your answer.
35 pepper plants
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?
8:10 = 4:5
Yes!
8:10 = (4xx2) : (5xx2)
300
What number should replace "?" to make the Ratios Equivalent: Show how you got your answer.
7:14 = ?:42
? = 21
300
There are 4 adults chaperones for every 1 students who attend a school field trip. If there were 16 students, how many adults would be on the field trip? Use a diagram to show you got your answer.
4 adults
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?
7:9 = 56:72
Yes!
7:9 = (7xx8) : (9xx8)
400
What number should replace "?" to make the Ratios Equivalent: Show how you got your answer.
2:16 = ?:80
? = 10
400
The ratio of desktop computers to laptop computers at a company is 2 to 9. If there were 99 laptop computers, how many desktop computers would there be?
22 computers
500
Write a ratio of Blue Circles to all White Shapes:
4/8, 4:8, 4 to 8
500
!!!!DAILY DOUBLE!!!!
Write 3 more Equivalent Ratios:
24:72
12:36, 8:24, 6:18, 3:9, 4:12
500
Are the Ratios Equivalent?
8/32 = 56/224
1792 = 1792
Yes!
500
!!!!DAILY DOUBLE!!!!
What number should replace "?" to make the Ratios Equivalent: Show how you got your answer.
18:? = 54:90
? = 30
500
Lori is 6 years old, her cousin Philip is twice as old as Lori will be. Write the ratio of Philip's to Lori's age now.
12:6