8.9 Plus 21 Addition :

Number 1	Number 2	Answer
8.9	21	29.9

How to calculate 8.9 plus 21 ?

Let's break down the addition of 08.9 and 2100 step by step:

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

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

   08.9
+  2100
---------
     9


    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.

   08.9
+  2100
---------
     9.9


    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.

   08.9
+  2100
---------
     29.9

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

The final result is 29.9.

Similar Summation Operations :

Number 1	Number 2	ANSWER:	HOW TO ?
9	23	32	9 plus 23
9.1	26	35.1	9.1 plus 26
9.2	28	37.2	9.2 plus 28
0.9	2.6	3.5	0.9 plus 2.6
1.7	9	10.7	1.7 plus 9
7.7	0.5	8.2	7.7 plus 0.5