Oct 28 Ticket- Dividing Fractions

Presentation

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Mathematics

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6th - 7th Grade

•

Medium

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CCSS

6.NS.A.1, 5.NF.B.7B, 3.NF.A.1

Standards-aligned

Ashley Kellams

Used 2+ times

FREE Resource

10 Slides • 30 Questions

When you multiply fractions, you just multiply the two numerators and then the denominators

Learning Intention:
Success Criteria:

Multiple Choice

How do you multiply two fractions?

Multiply the numerator by the denominator.

Multiply the denominator by the numerator.

Multiply straight across.

Add the numerators, then add the denominators.

Some text here about the topic of discussion.

Why can't we just do the same thing with fraction divison?

Vocabulary Words

Some text here about the topic of discussion

Improper Fraction - Fraction whose numerator is larger than the denominator.

Whole Number - A fraction where the denominator is always 1.

Simplifying Fractions - dividing the numerator and denominator by the same number. Placing the fraction in lowest terms.

Denominator - The bottom number of a fraction that tells how many equal parts are in the whole.

Numerator - The top number of a fraction that tells how many parts of a whole are being considered.

KCF - Keep, Change Flip

Reciprocal - any two numbers whose product is one when multiplied (flipped fraction)

Mixed Number - a number including a whole number and a fraction.

Steps to follow for dividing fractions

Step 1 - Only have fractions in the division sentence

Make sure you do not have any mixed numbers in the division sentence.

Step 2 - Keep, Change, Flip

Keep the first fraction the same, change the division sign to multiplication, and flip the second fraction.

Step 3 - Multiply

You will multiply straight across. Simplify if needed and convert to a mixed number.

6th Grade| Math

Dividing Fractions

Match

Match the following fraction with the reciprocal

1/6

3/4

2/7

9/10

3/8

4/3

7/2

10/9

8/3

A reciprocal is a mathematical expression or function so related to another that their product is 1.

When dealing with fractions, to find the reciprocal all you need to do is flip the numbers in the fraction.

Look at the example to the right.

Some text here about the topic of discussion.

Reciprocal

Fill in the Blanks

What is the reciprocal of

$3\ \frac{1}{5}$ ?

Type answer...

Fill in the Blanks

What is the reciprocal of

$\frac{5}{9}$ .

Type answer...

Fill in the Blanks

Turn 9 into a fraction

Type answer...

Dividing Fractions

When dividing fractions you

Keep, Change, Flip

Multiple Choice

Rewrite the division sentence:

$\frac{1}{4}\div\frac{3}{5}$

$\frac{1}{4}\times\frac{3}{5}$

$\frac{1}{4}\times\frac{5}{3}$

$\frac{4}{1}\times\frac{3}{5}$

$\frac{4}{1}\times\frac{5}{3}$

Multiple Choice

Which expression is represented by the model?

$\frac{3}{4}\div\frac{1}{3}$

$\frac{1}{4}\div\frac{1}{8}$

$\frac{1}{8}\div\frac{1}{4}$

$\frac{3}{4}\div\frac{1}{8}$

Multiple Choice

After I "Keep, Change, Flip" what equation would I have? $\frac{1}{2}\div\frac{2}{5}$

$\frac{2}{1}\times\frac{2}{5}$

$\frac{1}{2}\times\frac{5}{2}$

Multiple Choice

Solve $\frac{1}{2}\div\frac{2}{5}$

$\frac{4}{5}$

$\frac{5}{4}$

$\frac{2}{10}$

Multiple Choice

When dividing fractions, what rule do we use?

Keep, Change, Flip

Multiply straight across

Must have a common denominator

Multiple Choice

What is the reciprocal of 2 ?

2/1

1/2

none of the above

Multiple Choice

What is the reciprocal of $\frac{2}{3}$ ?

$\frac{2}{3}$

$\frac{1}{4}$

$\frac{3}{2}$

$\frac{4}{6}$

Multiple Choice

What is the recriprocal of 5

5/1

1/5

Multiple Choice

What is the reciprocal of $2\ \frac{1}{4}$ ?

$\frac{9}{4}$

$\frac{4}{9}$

2 $\frac{2}{8}$

$\frac{18}{8}$

Multiple Choice

$\frac{7}{8}\div\frac{6}{9}$ Rewrite as a multiplication problem.

*KCF

$\frac{7}{8}\times\frac{6}{9}$

$\frac{7}{8}\times\frac{9}{6}$

$\frac{8}{7}\times\frac{9}{6}$

Multiple Choice

$\frac{1}{2}\div\frac{2}{3}$ Rewrite as a multiplication problem.

$\frac{1}{2}\times\frac{2}{3}$

$\frac{2}{1}\times\frac{2}{3}$

$\frac{1}{2}\times\frac{3}{2}$

$\frac{2}{1}\times\frac{3}{2}$

Multiple Choice

5 ÷ 3/7

15/35

11 and 2/3

2 and 3/11

8 and 5/7

KEEP first fraction

CHANGE divide to multiply

FLIP second fraction over

You do not need to write this slide down.

Example

Multiple Choice

$2\ \div\ \frac{1}{3}$

$\frac{2}{3}$

$1\frac{1}{2}$

$\frac{1}{6}$

Fill in the Blanks

$3\div\frac{1}{5}$

Type answer...

Fill in the Blanks

What is the reciprocal of

$\frac{1}{10}$ ?

Type answer...

Fill in the Blanks

Find the quotient. Write your answer in simplest form.

$\frac{9}{4}\ \div\ \frac{4}{9}$

Type answer...

Fill in the Blanks

Find the quotient. Write your answer in simplest form.

$6\ \div\ \frac{1}{4}$

Type answer...

Fill in the Blanks

Find the quotient. Write your answer in simplest form.

$4\ \frac{3}{4}\ \div\ 2\frac{1}{2}$

Type answer...

Fill in the Blanks

$\frac{1}{3}\div\frac{5}{7}$

Type answer...

Fill in the Blanks

$\frac{9}{1}\div\frac{3}{5}$

Type answer...

Multiple Choice

What is a strategy for Dividing Fractions?

"Keep, Keep, Flip"

"Keep, Change, Flip"

Flip-Change-Flip

Multiply straight across

Multiple Choice

$\frac{1}{2}\div\frac{2}{3}$ How can this division sentence be written as multiplication?

$\frac{1}{2}\times\frac{2}{3}$

$\frac{2}{1}\times\frac{2}{3}$

$\frac{1}{2}\times\frac{3}{2}$

$\frac{2}{1}\times\frac{3}{2}$

Multiple Choice

$3\ \div\ \frac{1}{6}$ How can this division sentence be written as multiplication?

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

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

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

Multiple Choice

What is the quotient of these fractions in lowest terms?

6/40

6/10

3/5

12/20

Multiple Choice

$\frac{2}{5}\div3$ Solve.

2/15

1/7

6/5

6/15

When you multiply fractions, you just multiply the two numerators and then the denominators

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