28.4 Plus 21 Addition :

Number 1	Number 2	Answer
28.4	21	49.4

How to calculate 28.4 plus 21 ?

Let's break down the addition of 28.4 and 2100 step by step:

   28.4      <-- Start with the rightmost column
+  2100
---------

    Add the digits in the rightmost column:
        4 + 0 + 0 = 4
        Write down 4 in the rightmost column, carry over 0 to the next column.

   28.4
+  2100
---------
     4


    Add the digits in the rightmost column:
        8 + 1 + 0 = 9
        Write down 9 in the rightmost column, carry over 0 to the next column.

   28.4
+  2100
---------
     9.4


    Add the digits in the rightmost column:
        2 + 2 + 0 = 4
        Write down 4 in the rightmost column, carry over 0 to the next column.

   28.4
+  2100
---------
     49.4

    Continue to the left:
        There are no more columns to the left.

The final result is 49.4.

Similar Summation Operations :

Number 1	Number 2	ANSWER:	HOW TO ?
28.5	27	55.5	28.5 plus 27
28.6	34	62.6	28.6 plus 34
28.7	36	64.7	28.7 plus 36
4.1	2.2	6.3	4.1 plus 2.2
1.7	6.7	8.4	1.7 plus 6.7
2.8	3.3	6.1	2.8 plus 3.3