# Changing Recipe Quantities Worksheet

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Each of the 3 worksheets lists a recipe with quantities of each ingredient based on a given number of servings. Students are challenged to use what they know about proportionality and multiplying by fractions to calculate quantities for different numbers of servings.

Encourage students to write answers using proper fractions and mixed numbers as opposed to decimals. The quantities for the first ingredient in each worksheet are shown as examples.

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## Recipes and Proportions (page 1 of 3)

Name:______________________

The recipe below serves 4 people. Calculate the quantities for 2, 8, and 6 people and write them in the columns on the right for each ingredient.

 Quantity For 2 For 8 For 14 4 Chicken breasts 2 8 14 2 Tablespoons of olive oil 1 4 7 1⁄2 Teaspoon of black pepper 1⁄4 1 1 3⁄4 1⁄4 Pound of prosciutto 1⁄8 1⁄2 7⁄8 3 Small zucchinis 1 1⁄2 6 10 1⁄2 1 Clove of garlic 1⁄2 2 3 1⁄2

http://www.realsimple.com/food-recipes/browse-all-recipes/chicken-zucchini-prosciutto

Hint: Notice that the relationship between the different quantity does not change. e.g. no matter how many people are to be served, the number of chicken breasts is also twice the number tablespoons of olive oil and there are always three times more zucchinis than cloves of garlic.

You can use this to simplify your calculations e.g. if you calculate the quantity of tablespoons of olive oil, you will be able to find the number of chicken breasts by doubling that number.

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## Recipes and Proportions (page 2 of 3)

Name:______________________

The recipe below serves 8 people. Calculate the quantities for 4, 16, and 6 people and write them in the columns on the right for each ingredient.

 Quantity For 4 For 16 For 6 3 Pounds of small red new potatoes 1 1⁄2 6 2 1⁄4 8 Slices of bacon 4 16 6 1⁄2 Cup of mayonnaise 1⁄4 1 3⁄8 1⁄4 Cup of sour cream 1⁄8 1⁄2 3⁄16 3 Tablespoons of white wine vinegar 1 1⁄2 6 2 1⁄4 4 Stalks of celery 2 8 3 1⁄2 Cup of chopped parsley 1⁄4 1 3⁄8 1⁄4 Cup of fresh tarragon 1⁄8 1⁄2 3⁄16

The quantities for 6 people might be harder to measure. Mark a line on the measuring cup below to show the quantity of fresh tarragon for 6 people.

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## Recipes and Proportions (page 3 of 3)

Name:______________________

The recipe below serves 4 people. Calculate the quantities for 2, 8, and 6 people and write them in the columns on the right for each ingredient.

 Quantity For 2 For 8 For 6 2 Tablespoons of butter 1 4 3 3 Leeks (halved length-ways) 1 1⁄2 6 4 1⁄2 3⁄4 Pounds of fusilli 3⁄8 1 1⁄2 1 1⁄8 1⁄2 Cup of heavy cream 1⁄4 1 3⁄4 1 Pound of shrimp (raw) 1⁄2 2 1 1⁄2 12 Cups of baby spinach 6 24 18

http://www.realsimple.com/food-recipes/browse-all-recipes/shrimp-leek-spinach-pasta

The quantities for 6 people might be harder to measure. Mark a line on the measuring cup below to show the required quantity of heavy cream for 6 people.

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## Related Resources

The various resources listed below are aligned to the same standard, (7RP03) taken from the CCSM (Common Core Standards For Mathematics) as the Ratio and proportion Worksheet shown above.

Use proportional relationships to solve multistep ratio and percent problems. Examples: simple interest, tax, markups and markdowns, gratuities and commissions, fees, percent increase and decrease, percent error.

### Worksheet

Similar to the above listing, the resources below are aligned to related standards in the Common Core For Mathematics that together support the following learning outcome:

Analyze proportional relationships and use them to solve real-world and mathematical problems