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Add Two 2-digit Numbers - Within 100

To add two digit numbers, first align the numbers so that place values are lined up.

Add ones regroup if needed and then add tens.

For example: Let's find the sum of 38 and 35.

Align the numbers and add ones. Regroup if needed.

  1  
  3 8
+
3 5
    3

 

Now, add the tens.

  1  
  3 8
+
3 5
  7 3

 

The sum of 38 and 35 is 73.





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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.