9.8 Plus 21 Addition :

Number 1	Number 2	Answer
9.8	21	30.8

How to calculate 9.8 plus 21 ?

Let's break down the addition of 09.8 and 2100 step by step:

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

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

   09.8
+  2100
---------
     8


    Add the digits in the rightmost column:
        9 + 1 + 1 = 10
        Write down 0 in the rightmost column, carry over 1 to the next column.

   09.8
+  2100
---------
     0.8


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

   09.8
+  2100
---------
     30.8

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

The final result is 30.8.

Similar Summation Operations :

Number 1	Number 2	ANSWER:	HOW TO ?
9.9	26	35.9	9.9 plus 26
10	30	40	10 plus 30
10.1	39	49.1	10.1 plus 39
5.5	3	8.5	5.5 plus 3
0.9	7.9	8.8	0.9 plus 7.9
6.5	2	8.5	6.5 plus 2