20.4 Plus 21 Addition :

Number 1	Number 2	Answer
20.4	21	41.4

How to calculate 20.4 plus 21 ?

Let's break down the addition of 20.4 and 2100 step by step:

   20.4      <-- 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.

   20.4
+  2100
---------
     4


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

   20.4
+  2100
---------
     1.4


    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.

   20.4
+  2100
---------
     41.4

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

The final result is 41.4.

Similar Summation Operations :

Number 1	Number 2	ANSWER:	HOW TO ?
20.5	27	47.5	20.5 plus 27
20.6	32	52.6	20.6 plus 32
20.7	33	53.7	20.7 plus 33
7.4	1.5	8.9	7.4 plus 1.5
9	1.6	10.6	9 plus 1.6
7	0.2	7.2	7 plus 0.2