Scaling recipes
Name: _____________________ Date: __________
Show your thinking with numbers, words, or a drawing.
1. A fried rice recipe for 3 serves uses 90 g of rice. How much rice is needed for 9 serves?
2. A biscuit recipe for 4 serves uses 400 g of butter. How much butter is needed for 12 serves?
3. A biscuit recipe for 3 serves uses 30 g of butter. How much butter is needed for 12 serves?
4. A smoothie recipe for 5 serves uses 375 mL of milk. How much milk is needed for 20 serves?
5. A pancake recipe for 3 serves uses 300 g of flour. How much flour is needed for 12 serves?
Answer key · Scaling recipes
1. 270
9 serves is 9 ÷ 3 = 3 times as many as 3 serves.
90 × 3 = 270.
270 g of rice is needed.
2. 1200
12 serves is 12 ÷ 4 = 3 times as many as 4 serves.
400 × 3 = 1200.
1200 g of butter is needed.
3. 120
12 serves is 12 ÷ 3 = 4 times as many as 3 serves.
30 × 4 = 120.
120 g of butter is needed.
4. 1500
20 serves is 20 ÷ 5 = 4 times as many as 5 serves.
375 × 4 = 1500.
1500 mL of milk is needed.
5. 1200
12 serves is 12 ÷ 3 = 4 times as many as 3 serves.
300 × 4 = 1200.
1200 g of flour is needed.
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