Recipe Fraction Adjustments

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$Chef adjusting recipe with measuring cups and fractions$

🍪 Part 1: Understanding Recipe Fractions

1. Circle the correct answer: What does the fraction ¾ cup mean in a recipe?

Three cups plus four cups

Three parts out of four equal parts of a cup

Four cups divided by three

Three cups minus four cups

2. Convert these mixed numbers to improper fractions:

a) 1½ cups = _______ cups

b) 2¼ teaspoons = _______ teaspoons

c) 3⅓ cups = _______ cups

3. Show your working for question 2a:

🥞 Part 2: Scaling Recipes Up

4. Pancake Recipe (serves 4 people):

• 1½ cups flour

• ¾ cup milk

• ⅓ cup sugar

• ½ teaspoon salt

If you want to make this recipe for 8 people, what is the scaling factor?

Scaling factor = _______ ÷ _______ = _______

5. Calculate the new ingredient amounts for 8 people:

Flour: 1½ × _______ = _______ cups

Milk: ¾ × _______ = _______ cups

Sugar: ⅓ × _______ = _______ cups

Salt: ½ × _______ = _______ teaspoons

6. Show your working for calculating the flour amount:

🧁 Part 3: Scaling Recipes Down

7. Muffin Recipe (serves 12 people):

• 3 cups flour

• 1½ cups sugar

• ⅔ cup butter

• 2¼ teaspoons baking powder

You want to make this recipe for only 4 people. Calculate the scaling factor:

Scaling factor = _______ ÷ _______ = _______

8. Calculate the new ingredient amounts for 4 people:

Flour: 3 × _______ = _______ cups

Sugar: 1½ × _______ = _______ cups

Butter: ⅔ × _______ = _______ cups

Baking powder: 2¼ × _______ = _______ teaspoons

9. Show your working for calculating the sugar amount:

🍰 Part 4: Problem Solving

10. Sarah has a cake recipe that serves 6 people and uses 2¼ cups of flour. She wants to make the cake for 9 people. How much flour will she need?

Answer: _______ cups of flour

11. Check all the strategies that are helpful when adjusting recipes:

Find the scaling factor first

Convert mixed numbers to improper fractions

Multiply each ingredient by the scaling factor

Add the same amount to each ingredient

Simplify fractions in your final answer

12. Explain in your own words why we multiply ingredients by the scaling factor when adjusting recipes:

🥗 Part 5: Real-World Challenge

13. Fruit Salad Recipe (serves 8 people):

• 2⅔ cups chopped apples

• 1¼ cups grapes

• ¾ cup orange juice

• ⅓ cup honey

Your class has 28 students and you want to make enough fruit salad for everyone. Calculate how much of each ingredient you need:

Scaling factor: _______

Apples: _______ cups

Grapes: _______ cups

Orange juice: _______ cups

Honey: _______ cups

14. Show all your working for this problem:

15. If you could only buy ingredients in whole cup measurements, how would you round your answers? Explain your reasoning:

Recipe Fraction Adjustments

Recipe Fraction Adjustments

🍪 Part 1: Understanding Recipe Fractions

🥞 Part 2: Scaling Recipes Up

🧁 Part 3: Scaling Recipes Down

🍰 Part 4: Problem Solving

🥗 Part 5: Real-World Challenge

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