Benchmark Fractions
Consider the benchmarks 

and 1. 
Out of these two numbers, let's find which benchmark is between 

and 

. 
First check the benchmark 

. 
We can represent the fractions 

, 

,  and 

as follows: 
Now let’s compare the shaded areas.
Here, we can notice that 

is less than 

and 

. 
So, 

is not between 

and 

. 
Now, check the benchmark 1.
We can represent the fractions 

, 1 and 

as follows: 
Now let’s compare the shaded areas.
Here, we can notice that 1 is greater than 

and less than 

. 
So,  1  is between 

and 

. 
ds
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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.