Model Ratios
Writing Equivalent Ratios
Are the ratios equivalent?
Solve Equivalent Ratios
Problem Solving
100
Write a ratio of yellow to red circles:
3:4
100
Write the simplified ratio
3:12
1:4
100
Are the Ratios Equivalent?
2:4 = 3:5
No!
100
Solve for x to make the Ratios Equivalent:
x:5 = 8:10
x = 4
100
David learned 30 definitions in 2 minutes.
How many definitions will he learn in 1 minute?
15 definitions
200
Write a ratio of yellow to red circles:
5:3
200
Write the simplified ratio
18:4
9:2
200
Are the Ratios Equivalent?
5:10 = 3:6
Both ratios can simplify to 1:2!
Yes!
200
Solve for x to make the Ratios Equivalent:
3:9 = 9:x
x = 27
200
Lilly can prepare 24 paper boxes in three weeks.
How many paper boxes does she prepare in 1 week?
8 paper boxes
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?
8:10 = 16:18
No!
300
Solve for x to make the Ratios Equivalent:
7:14 = x:42
x = 21
300
A painter can paint 20 windows in 5 days.
How many windows can he paint in 8 days?
32 Windows
400
Write a ratio of squares to diamonds:
15:20
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
Solve for x to make the Ratios Equivalent:
2:16 = x:80
x = 10
400
Jack had to frame 12 glasses in 2 days
How many days will he take to frame 30 glasses?
5 days
500
Write a ratio of Blue Circles to all White Shapes:
4:8
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 = 56:224
Yes!
500
DAILY DOUBLE!!
Solve for x to make the Ratios Equivalent:
18:x = 54:90
x = 30
500
Alice has to write 5 pages in 30 minutes.
Ricky has to write 6 pages in 35 minutes.
If together they can write 10 pages in 50 minutes, how many pages they can write in 60 minutes?
12 pages