Multiplication of Fractions and Mixed Numbers
MathCamp
Do Now
Dr G. loves chocolate chip cookies. He
really loves those Entenmman’s little
chocolate chippers. How many cookies
do you think are in the box?
Explain any way you can
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Cookie recipes
Page 2
Multiplication of Fractions and Mixed Numbers
MathCamp
Cookies for the Class Party
Jenny and her brother are baking chocolate chip cookies for the
her class birthday party. It’s their favorite cookie. The mix calls
for the following ingredients to make a dozen cookies.
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Flour: 2½ cups
Chocolate chips: ¾ cups
Eggs: 2
Butter: ½ stick
Brown sugar: ⅔ cup
Granulated sugar:⅜ cup
Vanilla: ¼ tbsp
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If they want to make 24 cookies for their class, how
much will they need of each ingredient?
Strategy:
©Mathcamp, Inc
Cookie recipes
Page 3
Multiplication of Fractions and Mixed Numbers
MathCamp
Cookies for the Bake Sale
Janel and her brother are baking chocolate chip cookies for the
school bake sale. It’s the favorite cookie in the school. The mix
calls for the following ingredients to make a dozen cookies.
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Flour: 2½ cups
Chocolate chips: ¾ cups
Eggs: 2
Butter: ½ stick
Brown sugar: ⅔ cup
Granulated sugar:⅜ cup
Vanilla: ¼ tbsp
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If they want to make 72 cookies for the bake sale, how
much will they need of each ingredient?
Strategy:
©Mathcamp, Inc
Cookie recipes
Page 4
Multiplication of Fractions and Mixed Numbers
MathCamp
Carrot Cake for the Bake Sale
Julia and her mother like to eat healthy
desserts. They have been asked to make
their famous carrot cake for the school
bake sale. The mix calls for the following
ingredients.
Flour: 2¼ cups
Granulated sugar: 2⅛ cups
Baking soda: 2¼ tsp
Cinnamon: 1¼ tsp
Cooking oil: ¾ cup
Eggs: 4
Shredded carrot: 2½ cups
Chopped walnuts: 1¼ cups
If they want to make 4 cakes for the bake sale, how
much will they need of each ingredient?
Strategy:
©Mathcamp, Inc
Cookie recipes
Page 5
Multiplication of Fractions and Mixed Numbers
MathCamp
Brownies for the Bake Sale
Angelo and his sister are baking
brownies for the school bake sale.
It’s their favorite dessert. The mix
calls for the following ingredients
to make 20 brownies.
Flour: 1¼ cups
Semisweet chocolate: ¾ pound
Eggs: 3
Butter: ⅝ cup
Brown sugar: ½ cup
Granulated sugar: ¾ cups
Vanilla: 1⅜ tsp
Salt: ¼ tsp
Baking Powder: ½ tsp
If they want to make 80 brownies for the bake sale, how
much will they need of each ingredient?
Strategy:
©Mathcamp, Inc
Cookie recipes
Page 6
Multiplication of Fractions and Mixed Numbers
MathCamp
Banana Muffins for the Bake Sale
Ms. Eastwick is going to make her famous
banana muffins for the school bake sale.
She loves them and hopes the kids will too.
They are so healthy. The mix calls for the
following ingredients to make 12 muffins.
Flour: 2¼ cups
Bananas - mashed: 2
Eggs: 2
Butter: ⅝ cup
Buttermilk: ¾ cup
Granulated sugar:⅞ cup
Salt: 1¼ tsp
Baking soda: ½ tsp
Baking powder: 1 tsp
Vanilla extract: ⅔ tsp
If they want to make 72 muffins for the bake sale, how
much will they need of each ingredient?
Strategy:
©Mathcamp, Inc
Cookie recipes
Page 7
Multiplication of Fractions and Mixed Numbers
MathCamp
From the Front Street Bakery
Front Street bakery is known for its apple oatmeal cookies. They
have sent a recipe that they use to make 72 cookies. The kids like
them but think they will only need 36 cookies. How should they
change the recipe?
All purpose flour: 1½ cups
Whole wheat flour: 1½ cups
Cooking oats: 3 cups
Eggs: 2
Brown sugar: 1¼ cup
Raisins: 1 cup
Granny smith apples-chopped: 4½ cups
Honey: 1¼ cup
Salt: 1¼ tsp
Baking soda: ½ tsp
Baking powder: 1¾ tsp
Cooking oil: 1 cup
milk: ⅔ cup
If they want to make 36 cookies for the bake sale, how
much will they need of each ingredient?
Strategy:
©Mathcamp, Inc
Cookie recipes
Page 8