## Introduction: Dividing Fractions

looking to find out how to divide fractions?**well you've come to the right instructable**

if you liked this instructable, dont forget to vote!

## Step 1: The Problem

First, you gotta have a problem.

ill start it off with something easy

## Step 2: Making a Reciprocal

dividing fractions is as easy as multiplying- basically because it almost IS multiplying.

what you have to do is make a reciprocal, which is flipping the fraction.

notice how the division sign changed to a multiplication sign**make sure you make the fraction on the RIGHT side the reciprocal**

## Step 3: And....!

Now, all you have to do is multiply from one side to the next!

its that easy!

dont forget to simplify!

## Step 4: But What If...?

but what if you have mixed fractions?

easy.

make them into improper fractions!

multiply the whole number with the denominator

then add that number to the numerator, and write it out.

then, just repeat steps 1 - 3!

## Step 5: Additional Worksheets...

heres a worksheet to get you started -

### Attachments

Participated in the

Burning Questions Round 6.5

## 11 Comments

11 years ago on Introduction

My math teacher said something to help remember the process and I have never forgotten it: (yours is not to reason why, just invert and multiply) It's catchy!!

12 years ago on Step 3

where is the = 1 comes from?

Reply 12 years ago on Step 3

when something is the same numerator/denominator, it becomes a "1", because a fraction is really a division problem. so 20 goes into 20 once, which makes it one.

12 years ago on Introduction

What's next? Are going to see postings about multiplication table? I thought this site is for more sophisticated stuff...

Reply 12 years ago on Introduction

yeah, but what if your child is asking you for help? you just send them here 0.0

12 years ago on Introduction

May want to warn about inadvertent division by zero as well

12 years ago on Introduction

The phrase that my middle school teacher taught us (and I still use today) is "Keep it, Change it, Flip it." It refers to making the reciprocal, but is much easier to remember.

Keepthe first fraction,Changethe sign to multiplication,Flipthe second fraction.Reply 12 years ago on Introduction

. I was just told to "invert and multiply." KCF would have been easier to remember.

Reply 12 years ago on Introduction

thats actually pretty good :P

12 years ago on Introduction

Unfortunately, all your pictures you used at first (showing the problem before reciprocating) has a Multiplication sign, not a division sign.

Reply 12 years ago on Introduction

WOW... i am SO careless... im gonna have to fix that.