1. says I should “change” my shirt before she “flips” her lid!
Dividing Fractions
Made Easy!
Same!
Change!
Flip!
My momma
says I should “change” my shirt before she “flips” her lid!
© Created by Mike Walker

2. doesn’t remember what he had for breakfast!
Dividing Fractions
Dividing fractions sounds hard, but if you remember how to multiply fractions, then you’re in luck!
With a little change
to a division of fractions’ problem, you’ll be right
back to multiplying.
Sparky
doesn’t remember what he had for breakfast!
We better review!

3. “cross-cancel” method:
Dividing Fractions
To multiply fractions, we multiply numerator by numerator and denominator by denominator.
𝟒 𝟗 × 𝟑 𝟔 = 𝟏𝟐 𝟓𝟒
But don’t forget
to simplify!
𝟏𝟐÷𝟔 𝟓𝟒÷𝟔 = 𝟐 𝟗 2 1
Or use the
“cross-cancel” method:
𝟒 𝟗 × 𝟑 𝟔 = 2 9 3 3

4. cross-cancelling thing is sweet! Can we do another one…pleeeease?
Dividing Fractions
Now I
remember how
to multiply
fractions!
And that
cross-cancelling thing is sweet! Can we do another one…pleeeease?
Awesome!
Absolutely! But first, let’s look at how to divide fractions.

5. Dividing Fractions Dividing fractions is a tricky concept.
Something to think about:
Dividing fractions is a tricky concept.
It’s easier to multiply them.
By using the phrase, “same, change, flip,” we can easily turn a division of fractions’ problem into a multiplication problem.
(“Same, change, flip” means multiply by the reciprocal in the big leagues.)

6. Remember to think “same, change, flip”!
Dividing Fractions
𝟐 𝟑 ÷ 𝟑 𝟒
Let’s try one!
Remember to think “same, change, flip”!
Same – The first fraction stays the same: 𝟐 𝟑
Change – Change the division symbol to multiplication: 𝟐 𝟑 ×
Flip – Flip (invert) the second fraction: 𝟐 𝟑 × 𝟒 𝟑

7. kinda cool, but I’m not quite sure I have it.
Dividing Fractions
And just like that, we’re back to multiplying!
𝟐 𝟑 × 𝟒 𝟑 = 𝟖 𝟗
𝟐 𝟑 ÷ 𝟑 𝟒 =
𝟖 𝟗
is simplified,
we’re done!
since
That “same,
change, flip” thing is
kinda cool, but I’m not quite sure I have it.
Then let’s do another one!

8. Dividing Fractions 𝟒 𝟗 ÷ 𝟖 𝟏𝟓 𝟒 𝟗 𝟒 𝟗 × 𝟒 𝟗 × 𝟏𝟓 𝟖 Same: Change: Flip:
Give this a try!
Same:
𝟒 𝟗
Change:
𝟒 𝟗 ×
Flip:
𝟒 𝟗 × 𝟏𝟓 𝟖

9. Don’t forget to simplify! Or try the cross-cancel method. It’s fun!
Dividing Fractions
𝟒 𝟗 ÷ 𝟖 𝟏𝟓 =
𝟒 𝟗 × 𝟏𝟓 𝟖 = 𝟔𝟎 𝟕𝟐
Don’t forget to simplify!
𝟔𝟎 𝟕𝟐 = 𝟔𝟎 ÷ 𝟏𝟐 𝟕𝟐 ÷ 𝟏𝟐 = 𝟓 𝟔
Or try the cross-cancel method. It’s fun!
I think I
get it, but what
about mixed
numbers? 1
𝟒 𝟗 × 𝟏𝟓 𝟖 5
= 𝟓 𝟔 3 2
Great question!

10. Dividing Fractions 𝟒𝟓 𝟖 𝟒𝟓 𝟖 × 𝟒𝟓 𝟖 × 𝟒 𝟓 𝟓 𝟓 𝟖 ÷𝟏 𝟏 𝟒 = 𝟒𝟓 𝟖 ÷ 𝟓 𝟒
Write as improper fractions first!
Try this one!
= 𝟒𝟓 𝟖 ÷ 𝟓 𝟒
Same:
𝟒𝟓 𝟖
Change:
𝟒𝟓 𝟖 ×
Flip:
𝟒𝟓 𝟖 × 𝟒 𝟓

11. Dividing Fractions 𝟒𝟓 𝟖 × 𝟒 𝟓 = 𝟗 𝟐 𝟗 𝟐 =𝟒 𝟏 𝟐 9 1
𝟒𝟓 𝟖 × 𝟒 𝟓 1
= 𝟗 𝟐
This is a nice problem to cross-cancel. 2 1
Don’t forget to turn the improper fraction back into a mixed number!
𝟗 𝟐 =𝟒 𝟏 𝟐

12. Now it’s your turn to try some…
Dividing Fractions
Warning! You can only cross-cancel after a division of fractions’ problem has been changed to multiplication.
My momma
always warns me not
to hold in my
sneezes.
Have you
taken a look
at my head?
Point taken!
Do you listen to her?
Now it’s your turn to try some…

13. Dividing Fractions
Good luck!
Answers:
1. 𝟏 𝟒 ÷ 𝟐 𝟓
2. 𝟐 𝟕 ÷ 𝟓 𝟕
1. 𝟓 𝟖
2. 𝟐 𝟓
3. 𝟑 𝟖 ÷ 𝟑 𝟏𝟔
4. 6 𝟑 𝟒 ÷ 𝟗 𝟏𝟎
𝟏 𝟐
3. 2
𝟑 𝟒 ÷2 𝟓 𝟖
5. 𝟐 𝟑
© Created by Mike Walker