0.8 Plus 21 Addition :

Number 1	Number 2	Answer
0.8	21	21.8

How to calculate 0.8 plus 21 ?

Let's break down the addition of 00.8 and 2100 step by step:

   00.8      <-- 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.

   00.8
+  2100
---------
     8


    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.

   00.8
+  2100
---------
     1.8


    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.

   00.8
+  2100
---------
     21.8

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

The final result is 21.8.

Similar Summation Operations :

Number 1	Number 2	ANSWER:	HOW TO ?
0.9	22	22.9	0.9 plus 22
1	23	24	1 plus 23
1.1	29	30.1	1.1 plus 29
1.8	8.2	10	1.8 plus 8.2
7.5	6.2	13.7	7.5 plus 6.2
7	2.6	9.6	7 plus 2.6