21 Plus 678.9 Addition :

Number 1	Number 2	Answer
21	678.9	699.9

How to calculate 21 plus 678.9 ?

Let's break down the addition of 02100 and 678.9 step by step:

   02100      <-- Start with the rightmost column
+  678.9
---------

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

   02100
+  678.9
---------
     9


    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
+  678.9
---------
     09


    Add the digits in the rightmost column:
        1 + 8 + 0 = 9
        Write down 9 in the rightmost column, carry over 0 to the next column.

   02100
+  678.9
---------
     909


    Add the digits in the rightmost column:
        2 + 7 + 0 = 9
        Write down 9 in the rightmost column, carry over 0 to the next column.

   02100
+  678.9
---------
     9909


    Add the digits in the rightmost column:
        0 + 6 + 0 = 6
        Write down 6 in the rightmost column, carry over 0 to the next column.

   02100
+  678.9
---------
     69909

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

The final result is 69909.

Similar Summation Operations :

Number 1	Number 2	ANSWER:	HOW TO ?
21.1	682.9	704	21.1 plus 682.9
21.2	683.9	705.1	21.2 plus 683.9
21.3	686.9	708.2	21.3 plus 686.9
7.4	3.2	10.6	7.4 plus 3.2
6.5	5.7	12.2	6.5 plus 5.7
4.2	6.8	11	4.2 plus 6.8