21 Plus 402.4 Addition :

Number 1	Number 2	Answer
21	402.4	423.4

How to calculate 21 plus 402.4 ?

Let's break down the addition of 02100 and 402.4 step by step:

   02100      <-- Start with the rightmost column
+  402.4
---------

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

   02100
+  402.4
---------
     4


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

   02100
+  402.4
---------
     04


    Add the digits in the rightmost column:
        1 + 2 + 0 = 3
        Write down 3 in the rightmost column, carry over 0 to the next column.

   02100
+  402.4
---------
     304


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

   02100
+  402.4
---------
     2304


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

   02100
+  402.4
---------
     42304

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

The final result is 42304.

Similar Summation Operations :

Number 1	Number 2	ANSWER:	HOW TO ?
21.1	405.4	426.5	21.1 plus 405.4
21.2	410.4	431.6	21.2 plus 410.4
21.3	415.4	436.7	21.3 plus 415.4
8.8	5.6	14.4	8.8 plus 5.6
1.1	5.2	6.3	1.1 plus 5.2
4.6	4	8.6	4.6 plus 4