5.NF.B.7  Apply and extend previous understandings of division to divide unit fractions by whole numbers and whole numbers by unit fractions.(Note:  Division of a fraction by a fraction is not a requirement at this grade.)

5.NF.B.7.a  Interpret division of a unit fraction by a non-zero whole number, and compute such quotients. 

5.NF.B.7.b  Interpret division of a whole number by a unit fraction, and compute such quotients. For example, create a story context for 4 ÷ (1/5), and use a visual fraction model to show the quotient. Use the relationship between multiplication and division to explain that 4 ÷ (1/5) = 20 because 20 × (1/5) = 4.

5.NF.B.7.c  Solve real world problems involving division of unit fractions by non-zero whole numbers and division of whole numbers by unit fractions, e.g., by using visual fraction models and equations to represent the problem.