NF.2.7.c

Apply and extend previous understandings of division to divide unit fractions by whole numbers and whole numbers by unit fractions.

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. For example, how much chocolate will each person get if 3 people share 1/2 lb of chocolate equally? How many 1/3-cup servings are in 2 cups of raisins?

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Formative Assessments
Formative Assessments
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Students are asked to solve a word problem involving division of a whole number by a fraction.
Bags of Fudge
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Students are given a division expression and asked to write a story context to match the expression and use a visual fraction model to solve the problem.
Whole Numbers Divided by Fractions
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Students are given a division expression and asked to write a story context to match the expression and use a visual fraction model to solve the problem.
Fractions Divided by Whole Numbers
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Students are asked to solve a word problem involving division of a fraction by a whole number.
Relay Race
Virtual/Hands-on Manipulatives
Virtual/Hands-on Manipulatives
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Assessment Questions
Assessment Questions
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Equation Editor 1
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Multiple Choice
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Equation Editor 2
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Gridded Response
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Videos of Expert Instruction
Use Real Link and Title
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Hook/Performance Tasks
Hook/Performance Tasks
Achievement Level Descriptors Logo. Includes a dark gray document symbol on a yellow background.
This task requires students to recognize division problems in the context of a whole number divided by a unit fraction.
IM:  Dividing by One Half
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The purpose of this task is to provide students with a situation in which it is natural for them to divide a unit fraction by a non zero whole number.
IM:  Painting a Room
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The purpose of this task is to have students add fractions with unlike denominators and divide a unit fraction by a whole number.
IM:  Salad Dressing
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This task provides a context for performing division of a whole number by a unit fraction.
IM:  How Many Servings of Oatmeal?
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The purpose of this task is to present students with a situation in which they need to divide a whole number by a unit fraction in order to find a solution.
IM:  Origami Stars
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The purpose of this task is to provide students with a concrete situation they can model by dividing a whole number by a unit fraction.
IM:  Banana Pudding
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The purpose of this task is for students to solve a problem in context that can be solved in different ways but by dividing a whole number by a unit fraction.
IM:  Standing in Line
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This task is intended to address a division problem but from different points of view.
IM:  How Many Marbles?
Problem Based Lessons
Problem Based Lessons
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Robert Kaplinsky: Students determine how many biscuits they can make with ingredients that they have on hand.
How Many Biscuits Can You Make?