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8.03 Fractions of a quantity

Lesson

Are you ready?

Let's try this problem to practice identifying a fraction.

What fraction is shown here?

  1. Fraction shaded $=$=$\editable{}$ sixths

Learn

This video looks at finding a unit fraction of a quantity.

Apply

question 1

What is $\frac{1}{5}$15 of $20$20?

Learn

This video looks at finding a non-unit fraction of a quantity.

Apply

question 2

What is $\frac{6}{11}$611 of $$55$55?

 

Remember!

You can find a fraction of an amount by

  • Dividing the total quantity by the denominator, then multiplying the answer by the numerator, OR
  • Multiplying the total quantity by the numerator, then dividing the answer by the denominator.

 

Outcomes

5.NF.B.4

Apply and extend previous understandings of multiplication to multiply a fraction by a whole number and a fraction by a fraction.

5.NF.B.4a

A. Interpret the product (a/b) x q as a parts of a partition of q into b equal parts. For example, use a visual fraction model to show (2/3) x 4 = 8/3, and create a story context for this equation.

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