Instructions
Read the scenario below about remixing a cookie recipe. Your task is to use your knowledge of percentage increases to correctly adjust the ingredient amounts for bigger batches. Show your work in the space provided. Remember the formula for a percentage increase: New Amount = Original Amount + (Original Amount × Percentage Increase).
Scenario: The Cosmic Cookie Remix
You're famous for your "Cosmic Chocolate Chip Cookies." The original recipe makes a perfect batch of 12 cookies. However, due to popular demand, you need to make larger batches for different events. It's time to remix the recipe!
Original Recipe (makes 12 cookies)
- All-Purpose Flour: 200g
- Butter, unsalted: 100g
- Brown Sugar: 80g
- White Sugar: 50g
- Chocolate Chips: 150g
- Vanilla Extract: 1 tsp
Part 1: The School Bake Sale
For the upcoming school bake sale, you want to make a batch that is 50% larger than the original. Calculate the new amount needed for each ingredient.
1. Flour:
Work space:
New Amount: _______________ g
2. Butter:
Work space:
New Amount: _______________ g
3. Brown Sugar:
Work space:
New Amount: _______________ g
4. Chocolate Chips:
Work space:
New Amount: _______________ g
Part 2: The Big Party Batch
A friend has asked you to cater their party, and they need a lot of cookies! You need to increase the original recipe by 150%. Calculate the new amounts.
5. Flour:
Work space:
New Amount: _______________ g
6. White Sugar:
Work space:
New Amount: _______________ g
7. Vanilla Extract:
Work space:
New Amount: _______________ tsp
Part 3: Thinking Deeper - The Recipe Investigation
Your baking assistant was helping you and accidentally used 180g of butter instead of the 100g required by the original recipe.
8. By what percentage did your assistant increase the butter?
Work space:
Percentage Increase: _______________ %
Answer Key
Part 1: The School Bake Sale (50% Increase)
Method: Original Amount × 1.5 (or Original Amount + (Original Amount × 0.50))
- Flour: 200g × 1.5 = 300g
- Butter: 100g × 1.5 = 150g
- Brown Sugar: 80g × 1.5 = 120g
- Chocolate Chips: 150g × 1.5 = 225g
Part 2: The Big Party Batch (150% Increase)
Method: Original Amount × 2.5 (or Original Amount + (Original Amount × 1.50))
- Flour: 200g × 2.5 = 500g
- White Sugar: 50g × 2.5 = 125g
- Vanilla Extract: 1 tsp × 2.5 = 2.5 tsp
Part 3: Thinking Deeper - The Recipe Investigation
Method: ((New Amount - Original Amount) / Original Amount) × 100
- Percentage Increase for Butter:
- Increase Amount: 180g - 100g = 80g
- (80g / 100g) × 100 = 0.8 × 100 = 80%