Dividing Fractions

​What did the DENTIST say to the GOLFER?

​You Have A Hole In One

Dividing Fractions

by Guy May

​Some things to remember.

​1. Use the same rules for division as multiplication to determine the sign of the quotient.

​2. When dividing we use the rule

​Same - Change - Flip

​or

​Keep - Change - Flip

​3. Then multiply just like we did on Friday.

Multiple Choice

Just a little review....

Positive x Negative =

• Positive

• Negative

• Either

• zero

Multiple Choice

Just a little review....

Negative x Negative =

• Positive

• Negative

• Either

• zero

Multiple Select

When dividing fractions the rule is .....

(Hint there is more than on correct answer)

• Same - Change - Opposite

• Same - Change - Flip

• Same - Change - Reciprocal

• Keep - Change - Flip

Multiple Choice

When can you cross cancel?

• When it is still division.

• When it has been changed to multiplication.

• Either, when it is division or multiplication.

• You can never cross cancel.

​Example

Multiple Choice

Divide

Hint: Keep-Change-Flip

• 6

• 1/6

• 6/49

• 7/42

Multiple Choice

Divide

Hint: Two negatives make a .......

• 1/20

• -4/5

• 4/5

• -1/20

Multiple Choice

Divide

Hint: Remember 8 is the same as $$\frac{8}{1}$$  

• 24

• 1/24

• 2

• 3

Converting mixed numbers to improper fractions. Get MAD

​M - Multiply whole number by denominator

​A - Add to numerator

​D - Keep denominator.

​

Multiple Choice

Divide

Hint: Improper Fraction (MAD)

• 1 2/3

• $$\frac{2}{3}$$  

• 1 1/3

• 1

​Solution

Multiple Choice

Divide

HINT: GET MAD

• -3 $$\frac{3}{27}$$  

• $$\frac{3}{27}$$  

• - $$\frac{8}{27}$$  

• $$\frac{8}{27}$$  

Multiple Choice

Divide

Hint: a positive and a negative make a .......

• -3 $$\frac{11}{17}$$  

• 2 $$\frac{11}{17}$$  

• -3 $$\frac{11}{17}$$  

• -2 $$\frac{11}{17}$$  

Multiple Choice

• 2 dogs

• 1/2 lbs

• 2 lbs

• 3/4 lbs

• 1/2 a dog?

​Time to start out homework!

​The MORAL of the STORY