8.4 Plus 21 Addition :

Number 1	Number 2	Answer
8.4	21	29.4

How to calculate 8.4 plus 21 ?

Let's break down the addition of 08.4 and 2100 step by step:

   08.4      <-- 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.

   08.4
+  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.

   08.4
+  2100
---------
     9.4


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

   08.4
+  2100
---------
     29.4

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

The final result is 29.4.

Similar Summation Operations :

Number 1	Number 2	ANSWER:	HOW TO ?
8.5	26	34.5	8.5 plus 26
8.6	30	38.6	8.6 plus 30
8.7	37	45.7	8.7 plus 37
7	4.2	11.2	7 plus 4.2
3.1	4.4	7.5	3.1 plus 4.4
8	3.2	11.2	8 plus 3.2