Model
Writing Equivalent Ratios
Are the ratios equivalent?
Solve Equivalent Ratios
Set it up
100
Write a ratio of yellow to red circles:
3:4
100
Reduce the ratio to make an equivalent ratio
3:12
1:4
100
Are the Ratios Equivalent? How do you know?
2:4 = 8:12
No! 2 x 4 = 8 and 4 x 4 = 16
100
Solve for x to make the Ratios Equivalent:
x:5 = 8:10
x = 4
100
The ratio of tomatoes to red apples is 2:5. If there are 20 tomatoes, how many red apples are there?
50 apples
200
Write a ratio of yellow to red circles:
5:3
200
Reduce the ratio to make an Equivalent Ratio:
18:4
9:2
200
Are the Ratios Equivalent? How do you know?
5:10 = 30:60
x6
Yes!
200
Solve for x to make the Ratios Equivalent:
3:9 = 9:x
x = 27
200
The ratio of berries to oranges is 12:36. If there are 9 oranges, how many berries are there?
3 berries
300
Write a ratio of red to blue circles:
5:6
300
Write 2 more Equivalent Ratios:
10:20
1:2, 2:4
300
Are the Ratios Equivalent? How do you know?
1:2 = 16:18
No!
300
DAILY DOUBLE!!!
Solve for x to make the Ratios Equivalent:
7:14 = x:28
x = 14
300
The ratio of students to teachers is 30:1 If there are 240 students, how many teacher are there?
8 teachers
400
Write a ratio of squares to diamonds. Can you reduce it for an extra 100 points?
15:20, 3:4
400
Write 3 more Equivalent Ratios:
15:30
1:2, 3:6, 5:10
400
Are the Ratios Equivalent? How do you know?
13:14 = 26:24
No
400
Solve for x to make the Ratios Equivalent:
2:16 = x:8
x = 1
400
12 students play on the school's basketball team and 36 students play on the football team. What is the ratio of basketball players to football players? Give a reduced ratio.
1:3
500
Write a ratio of Blue Circles to all White Shapes. Can you reduce it for an extra 100 points?
4:8, 1:2
500
Reduce the ratio. Then write 2 more Equivalent Ratios:
24:72
1:3, 3:9, 4:12, 6:18, 8:24, 12:36
500
Are the Ratios Equivalent? How do you know?
8:32 = 1:4
Yes!
500
Solve for x to make the Ratios Equivalent:
X:30 = 21:90
x = 7
500
DAILY DOUBLE!!!
The ratio of blueberries to strawberries is 4:7. If there are 56 strawberries, how many total berries are there?
88 berries