IXL | Divide fractions by whole numbers in recipes

What quantity of fresh strawberries would you need to make a third of the original recipe?

Very berry punch

INGREDIENTS:

1 cup cranberry juice

cups blueberry juice

cup raspberry puree

2 cups cherry soda

1 cup fresh blackberries

cup fresh strawberries

Write your answer as a fraction or as a whole or mixed number.

cups

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Learn with an example

question

What quantity of pineapple chunks would you need to make a half recipe?

Pineapple punch

INGREDIENTS:

cups pineapple juice

cups pineapple soda

cup pineapple chunks

6 cups grapefruit juice

5 cups lemon-lime soda

Write your answer as a fraction or as a whole or mixed number.

cups

solution

The recipe calls for

of a cup of pineapple chunks. To cut the recipe in half, divide this amount by 2.

Write 2 as an improper fraction.

Turn this from a division problem into a multiplication problem by multiplying by the reciprocal.

Now multiply.

You would need

of a cup of pineapple chunks.

Looking for more? Try these:

Lesson: Dividing fractions by whole numbers

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Teacher tools

Work it out

Not feeling ready yet? These can help:

M.3Divide whole numbers and unit fractions

R.8Multiply fractions and mixed numbers in recipes

Lesson: Dividing fractions by whole numbers

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