Chapter 8: Divide Fractions

5.NF.B.3 - Interpret a fraction as division of the numerator by the denominator a/b. Solve word problems involving division of whole numbers leading to answers in the form of fractions or mixed numbers, e.g., by using visual fraction models or equations to represent the problem.

5.NF.B.7 - Apply and extend previous understandings of division to divide unit fractions by whole numbers and whole numbers by unit fractions.

          • Interpret division of a unit fraction by a non-zero whole number, and compute such quotients.

          • Interpret division of a whole number by a unit fraction, and computer such quotients.

          • Solve real-world problems involving division of unit fractions by non-zero whole numbers and division of whole numbers by unit fraction.

Click on the Quizlet button to access the vocabulary words that you will need to know in Chapter Eight.

Chapter 8 Vocabulary

  • dividend - the number that is to be divided in a division problem

  • equation - an algebraic or numerical sentence that shows that two quantities are equal

  • fraction - a number that names a part of a whole or a part of a group

  • quotient - the number, not including the remainder, that results from dividing

  • whole number - a number that belong to the set 0, 1, 2, 3, 4, 5, 6, .....etc.


Lesson 8.1 - Investigate: Divide Fractions and Whole Numbers

Students will divide a whole number by a fraction and divide a fraction by a whole number.

IXL Practice (click on the links below)

Divide unit fractions by whole numbers using models.

Divide whole numbers by unit fractions using models

Divide unit fractions and whole numbers using area models


Lesson 8.2 - Problem Solving: Use Multiplication

Students will solve problems using the strategy draw a diagram.

IXL Practice (click on the links below)

Divide fractions by whole numbers in recipes

Divided unit fractions and whole numbers: word problems


Lesson 8.3 - Connect Fractions to Division

Students will interpret a fraction as division and solve whole-number division problems that result in a fraction or mixed number.

IXL Practice (click on the links below)

Divide two fractions

Divide fractions and mixed numbers


Lesson 8.4 - Fraction and Whole-Number Division

Students will divide a whole number by a fraction and divide a fraction by a whole number.

IXL Practice (click on the links below)

Divide unit fractions by whole numbers

Divide whole numbers by unit fractions

Divide fractions by whole numbers

Divide whole numbers by fractions


Lesson 8.5 - Interpret Division with Fractions

Students will represent division by drawing diagrams and writing story problems and equations

IXL Practice

Divide fractions and mixed numbers

Divide fractions and mixed numbers: word problems