Decompose Fractions into Unit Fractions

A unit fraction is a fraction in which numerator is 1.

 

Let's decompose
3
7
as a sum of unit fractions .

 

Make a model to identify the sum of the unit fractions.

 

16a


This model represents a whole divided into 7 equal parts.

 

Here, each part represents the unit fraction,
1
7
.

 

16b
 

 

Now, select 3 parts to represent the fraction
3
7
.

 

16c

So,
3
7
=
1
7
+
1
7
+
1
7
.





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Help

The correct answer is

Remember :

The smallest number is the one that comes first while counting.

Solution :

To arrange the given numbers in order from smallest to greatest, find the smallest number among all the given numbers.

21,27,23

21 is the smallest number.