Model Ratios
Writing Equivalent Ratios
Are the ratios equivalent?
Solve Equivalent Ratios
Word Problems
100
What is the scale factor to get from 2 hotdogs to 8 hotdogs?
x4
100
Write 3 more Equivalent Ratios using multiplication:
1/4
2/8, 3/12, 4/16
100
Are the Ratios Equivalent?
Write Yes or No. If yes, tell the scale factor
2:4 = 8:12
No!
100
Solve for x to make the Ratios Equivalent:
x/5 = 8/10
x = 4
100
A recipe requires 2 cups of milk for every 3 cups of flour. If you use 8 cups of milk, how many cups of flour do you need?
12
200
What is the scale factor to get from 50 items to 5 items?
divide by 10
200
Write 3 more Equivalent Ratios using multiplication:
2/9
4/18, 6/27, 8/36
200
Are the Ratios Equivalent?
Write Yes or No. If yes, tell the scale factor
5:10 = 30:60
Yes! x6
200
Solve for x to make the Ratios Equivalent:
3/9 = 9/x
x = 27
200
For every $5 Carl spends on movies, he spends $15 on video games. Last month, he spent $60 on video games. How much did he spend on movies?
$20
300
What would the amount earned be for 9 hours?
108
300
Are the fractions 2/4 and 5/8 equivalent?
NOOOO!
300
Are the Ratios Equivalent?
Write Yes or No. If yes, tell the scale factor
8:10 = 16:18
No!
300
Solve for x to make the Ratios Equivalent:
7/14 = x/42
x = 21
300
Keely went for a long swim. If she swam 12 miles in 3 hours, how far would she swim in 6 hours?
24
400
What would be the number of items at a cost of $80?
16 items
400
Write 3 more Equivalent Ratios using multiplication:
9/13
18/26, 27/39, 36/52
400
Are the Ratios Equivalent?
Write Yes or No. If yes, tell the scale factor
13:14 = 39:42
Yes! x3
400
Solve for x to make the Ratios Equivalent:
2/16 = x/80
x = 10
400
The ratio of students who like apple juice to grape juice is 4:3. If 30 kids in the class like grape juice, how many kids like apple juice?
40
500
How many hotdogs would you get for $300?
100
500
Write 3 more Equivalent Ratios using division:
24/36
12/18, 6/9, 2/3, 8/12, 4/6,
500
Are the Ratios Equivalent?
Write Yes or No. If yes, tell the scale factor
8:32 = 56:224
Yes! x7
500
Solve for x to make the Ratios Equivalent:
18/x = 54/90
x = 30
500
The ratio of students with straight hair to curly hair in the 7th grade is 4:5. If there are 52 students with straight hair, how many students are their total?
117