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# Dividing fractions - how do you divide fractions?

## How do you divide fractions?

Divide fractions - how to divide fractions?

To do this, we first divide fractions by whole numbers. That is still simple.

Then we divide two fractions. Dividing two fractions is already getting more difficult. But the illustration helps you to understand it better.

Once we have understood the rules of arithmetic, we practise larger arithmetic expressions with fractions, brackets, plus, minus and multiplication signs.

## Dividing fractions with whole numbers

Divide fractions by an integer - Rule | Definition

You divide a fraction by a whole number by multiplying the fraction by the reciprocal of the number. To do this, we write the divisor as:

$$\frac{1}{number}$$

If we swap the numerator of a fraction with the denominator of the fraction, the new number is called the reciprocal of the fraction.

The divisor (the number by which we divide) is therefore always multiplied by the denominator. We therefore divide the fraction further!

Example:

$$\frac{3}{4} : 3 = \frac{3}{4} \cdot \frac{1}{3} = \frac{3 \cdot 1}{4 \cdot 3} = \frac{1}{4}$$

## divide two fractions

Dividing two fractions - Rule | Definition

In order to understand division correctly, we need to be clear about what division means: dividing by a number means we solve the problem: how many times does the divisor fit into the number.

12 : 2 means: How often does 2 fit into 12. The answer is the solution of the division:

12 : 2 = 6

This is exactly how we divide 2 fractions.

How many times does $$\frac{1}{8}$$ fit into $$\frac{3}{4}$$?

The answer is: 6 times. Maths Fritz explains it to you in the picture next to it.

Divide fractions rule:

Two fractions are divided by multiplying the first fraction (dividend) by the reciprocal of the second fraction (divisor).

The online exercises will be created very soon!

## Dividing fractions tasks - online and as PDF

Dividing fractions Examples and tasks PDF

Two pages of worksheets for the following online exercises. Simply print them out and practise on paper or fill them in on your tablet with a pen.

As a test or class work for an easy introduction to fractions! Are you fit?

Fractions Exercises - Exercise (1) Fractions with equal denominators

Divide fractions

Enter only the numerator of the fraction in the empty field as the result!

Fractions Division Tasks - Exercise (2)

Enter only the numerator of the fraction in the empty field as the result!

## Dividing fractions exercises - mixed tasks

#### So you can add and subtract fractions if they do NOT have the same denominator (are not of the same name).

Fractions with different denominators can only be added or subtracted when the denominators are the same. To do this, you have to reduce and/or expand the fractions until they have the same denominator.

The common denominator (main denominator) results from the smallest common multiple of all denominators involved!

Examples:

(1) $$\frac{1}{3} +\frac{1}{4} = \frac{1\cdot 4}{3 \cdot 4} + \frac{1 \cdot 3}{4 \cdot 3} = \frac{4}{12} +\frac{3}{12} = \frac{7}{12}$$

(2) $$\frac{2}{9} +\frac{1}{6} = \frac{2\cdot 2}{9 \cdot 2} + \frac{1 \cdot 3}{6 \cdot 3} = \frac{4}{18} +\frac{3}{18} = \frac{7}{18}$$

You can also find more theory about fractions on Wikipedia

Normally you do this in fractions grade 5.

Exercise (1) - Find the same denominator of 2 fractions and then add the fractions.Add the missing numbers to the numerator of the fraction. Look carefully. The common denominator of the fractions is already there!

Exercise (2) - Find the same denominator of 2 fractions and then add the fractions.

Add the missing numbers to the numerator of the fraction. Look carefully. The common denominator of the fractions is already there!

Exercise (3) - Write down the task and then work it out!

Add the missing numbers to the numerator and denominator of the fraction.

Divide fractions worksheets

The tasks from the exercises type (III) as PDF for printing:

Exercise (4) - Dividing fractions

These fractions tasks with solutions tasks are only available as worksheets PDF for printing. Here is an example of how the tasks look:

## Crossword - Division of fractions

Divide fractions - The crossword topic!

## The exercise book for fractions

The exercise book on this topic:

Fractions grade 5 - Fractions tasks with solutions

Maths lesson 5 - Simple fractions

• 60 p - b/w - DIN A4
• 5,95 € (D)

ISBN: 978-3941868175

Order directly and quickly from Amazon or in any bookshop!