A fraction as a divisor
A fraction is actually a division exercise! A result obtained from a division exercise is called a quotient and if it is incomplete, it will appear in the form of a fraction.
It is important to remember the rules:
The fraction line - symbolizes the division operation.
The numerator - symbolizes the number that is being divided (the divided number) - what must be equally divided among all (for example, cakes, pizzas, etc.)
The denominator - symbolizes the number that divides the numerator. (for example, the number of people that should be divided among)
How do we go from a division exercise to a fraction?
A division exercise can be converted into a fraction easily and quickly according to the above rules.
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Let's look at an exercise
Convert the division exercise 4:2= into a fraction
Solution:
In the numerator - put the number being divided: 4
Let's not forget the fraction line that will mark the division operation.
In the denominator - put the number that divides the numerator: 2
We get: 24
Obviously, we can simplify it and we get 2 (it was asked how many times the denominator fits into the numerator)
Another exercise:
Convert the division exercise 10:3= into a fraction
Solution:
In the numerator - put the number being divided: 10
Let's not forget the fraction line that will mark the division operation.
In the denominator -> put the number that divides the numerator-> 3
We get: 310
We can convert it into a mixed fraction and we get 331
Reminder: How to convert an equivalent fraction into a mixed number?
We will be asked how many times the denominator fits into the numerator without remainder
in our exercise 3 fits into 10: 3 times - this will be the number of whole numbers.
The denominator - will remain the same: 3
In the numerator - we will subtract the original numerator minus the result of the product between the number of whole numbers we obtained multiplied by the denominator. That is: 10−(3×3)=1
The final result: 1 will appear in the numerator.
Do you know what the answer is?
Now, let's see while we practice how to view the fraction as a division quotient.
Here is a question
In the kitchen, there are 6 delicious chocolate cookies.
Roberto, Mariana, and Lionel want to share them equally.
How many cookies will each one get?
Solution:
To find out how many cookies each one will get, we will have to do a division exercise.
We will write down the number of cookies divided by the number of people and get the result.
That is:
6:3=2
We could write the exercise as a fraction as we learned before and get:
36=2
each one will get 2 cookies.
Another question
Bernard, Oscar, Nicholas, Ernest, and Gabriel are playing in the courtyard.
Suddenly, the teacher brings them 6 pizzas and asks them to share equally.
How many pizzas will each child receive?
Solution:
To answer, we will need to write a division exercise: the number of pizzas to be divided, divided by the number of children in the courtyard.
That is:
6:5=
Pay attention! It's time to turn the exercise into a fraction to know exactly how many pizzas each child received.
We will invert and get 56=
Now, we will convert the similar fraction into a mixed number and get 151.
Each child received one whole pizza and another fifth of a pizza. Or in summary 151 pizzas.
Another exercise
3 Good friends celebrated a birthday in the garden.
On the table –> 4 Cakes.
The children were asked to distribute the cakes equally.
Solution:
This time, we will write the division exercise directly as a fraction to save us a step.
In the numerator - the number that needs to be divided: 4 Cakes.
In the denominator - the number by which the cakes are divided: 3 -> the number of children celebrating.
We will obtain:
34
(The fraction expresses the division exercise for us 4:3=)
We will convert it into a mixed number and obtain: 131
Each child received 131 cake.
Bonus section
What would happen if there were only 2 cakes on the table? How much would each child get then?
Solution:
If there were 2 cakes on the table we would get:
32
It is impossible to reduce it or convert it into a mixed number and that is exactly the answer.
All the children would have received 32 cake.
Examples and exercises with solutions of fraction as divisor
Exercise #1
What fraction results from dividing 9 by 13?
Video Solution
Step-by-Step Solution
First, let's write out the division exercise:
9:13
Now let's write it as a simple fraction, remembering that the numerator is on top and the denominator is on the bottom:
139
Answer
Exercise #2
What fraction results from dividing 2 by 3?
Video Solution
Step-by-Step Solution
First, let's write the division exercise:
2:3
Now let's write it as a simple fraction, remembering that the numerator is on top and the denominator is on the bottom:
32
Answer
Exercise #3
What fraction results from dividing 2 by 5?
Video Solution
Step-by-Step Solution
Firstly, let's write out the division exercise:
2:5
Now, let's write it out again as a simple fraction, remembering that the numerator is on top and the denominator is on the bottom:
52
Answer
Exercise #4
Solve the following expression:
1313=
Step-by-Step Solution
First, we will divide the numerator and denominator by the highest number that both are divisible by.
In this case, the number is 13.
Then we will divide the fraction as follows:
13:1313:13=11=1
Answer
Exercise #5
Solve the following expression:
2929=
Step-by-Step Solution
First we will divide the numerator and denominator by the highest number that both are divisible by.
In this case, the number is 29.
Then we will divide the fraction as follows:
29:2929:29=11=1
Answer