Common Core Alignment:.

4.NF.4a:

Number And Operations - Fractions

Build Fractions From Unit Fractions By Applying And Extending Previous Understandings Of Operations On Whole Numbers.

Understand a fraction a/b as a multiple of 1/b. For example, use a visual fraction model to represent 5/4 as the product 5 x (1/4), recording the conclusion by the equation 5/4 = 5 x (1/4).

5.NF.4:

Number And Operations - Fractions

Apply And Extend Previous Understandings Of Multiplication And Division To Multiply And Divide Fractions.

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