Dividing Fractions

Presentation

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Mathematics

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4th - 5th Grade

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Practice Problem

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Medium

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CCSS

5.NF.B.7C, 6.NS.A.1, 5.NF.B.7B

Standards-aligned

Carla Williams

Used 54+ times

FREE Resource

11 Slides • 3 Questions

Introduction to

Dividing Fractions

Fifth Grade

Learning Objectives

I can represent and solve problems involving division of a unit fraction by a whole number.
I can represent and solve problems involving division of a whole number by a unit fraction.

Dividing Fractions Song

https://numberock.com/lessons/dividing-a-whole-number-by-a-fraction/

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What We Already Know

Dividing Whole Number by a Unit Fraction

When dividing a whole number by a fraction represent the whole number by using fractions.
Use enough fractions to represent the whole number.
Count the number of fractions.

For Example

Multiple Choice

We can see there are 4 fourths in 1 whole.

In total there are 8 fourths in 2 whole parts.

KCF

KCF stands for:
Keep - keep the first fraction the same.
Change - change the division sign to multiplication.
Flip - flp the second fraction.

Multiple Choice

Which shows the correct KCF method?

$\frac{3}{1}\times\frac{6}{1}$

$\frac{1}{3}\times\frac{1}{6}$

$\frac{1}{3}\times\frac{6}{1}$

$\frac{3}{1}\div\frac{6}{1}$

Dividing Unit Fractions by Whole Numbers

KCF

Let's solve the same problem using the KCF method!

Multiple Select

What is $\frac{1}{3}\div5$

$\frac{1}{3}\times\frac{1}{5}=\frac{1}{15}$

$\frac{1}{3}\times\frac{5}{1}=\frac{5}{3}$

Things to Remember

If you start with a fraction you will end with a fraction.
If you start with a whole number you will end with a whole number.

Introduction to

Dividing Fractions

Fifth Grade

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