Subtracting Money
Subtracting money is same as subtracting numbers.
For example: Let's find the difference of $46 and $13.
First, subtract the ones.
4  6  

1  3 
3 
Now, subtract the tens.
4  6  

1  3 
3  3 
So, $46 – $13 = $33.
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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.