To make yummy fruit punch, use 2 cups of grape juice for every 3 cups of apple juice.
If you already have 12 cups of apple juice, how many cups of grape juice will you need to make fruit punch? In this lesson you will learn to solve ratio problems by using a tape diagram. Let’s Review
3 ways to solve ratio problems 1) Table with addition +2 +2 +2
Cups of grape juice 2 4 6 8
Cups of apple juice 3 6 9 12
+3 +3 +3 Let’sLet’s Review Review
2) Table with multiplication x4
Cups of grape juice 2 8
Cups of apple juice 3 12
x4 Let’sLet’s Review Review x4 3) Double number lines
0 2 4 6 8 cups of grape juice cups of apple juice 0 3 6 9 12
x4 Let’sA Common Review Mistake
Thinking that a ratio describes just one situation
Example: 2 eggs for every 3 cups of flour Let’sCore Review Lesson To make yummy fruit punch, use 2 cups of grape juice for every 3 cups of apple juice. If you already have 12 cups of apple juice, how many cups of grape juice will you need to make fruit punch? 2 x 4 = 8 cups of grape juice 2 2 2 2 cups of 3 3 3 3 apple juice 3 x 4 = 12 In this lesson you have learned to solve ratio problems by using a tape diagram. Let’sGuided Review Practice Soda is on sale: 3 bottles for $4. How much would it cost to buy 15 bottles of soda? Use a tape diagram to solve. Let’sExtension Review Activities
Soda is on sale: 2 bottles for $4. How much would it cost to buy 5 bottles of soda? Let’sExtension Review Activities
In lemonade, the ratio of lemon juice to water is 1 to 3. How many cups of lemon juice will you need if you want to make 10 total cups of lemonade? Let’sExtension Review Activities
In Adam’s class, 2 out of every 5 students play a sport. If there are 20 students in the class, how many students play a sport? Use a tape diagram to solve. Let’sQuick Quiz Review To make pink paint, you mix 3 gallons of white paint for every 4 gallons of red paint. How many gallons of red paint will you need to mix with 12 gallons of white paint? Use a tape diagram to solve. In Ms. Henry’s class, there are 3 girls for every 2 boys. If there are 12 boys in the class, how many girls are in the class? Use a tape diagram to solve.