21 Plus 678.4 Addition :

Number 1	Number 2	Answer
21	678.4	699.4

How to calculate 21 plus 678.4 ?

Let's break down the addition of 02100 and 678.4 step by step:

   02100      <-- Start with the rightmost column
+  678.4
---------

    Add the digits in the rightmost column:
        0 + 4 + 0 = 4
        Write down 4 in the rightmost column, carry over 0 to the next column.

   02100
+  678.4
---------
     4


    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
+  678.4
---------
     04


    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
+  678.4
---------
     904


    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
+  678.4
---------
     9904


    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
+  678.4
---------
     69904

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

The final result is 69904.

Similar Summation Operations :

Number 1	Number 2	ANSWER:	HOW TO ?
21.1	686.4	707.5	21.1 plus 686.4
21.2	692.4	713.6	21.2 plus 692.4
21.3	696.4	717.7	21.3 plus 696.4
7.9	5.2	13.1	7.9 plus 5.2
4.1	6	10.1	4.1 plus 6
6.9	8.6	15.5	6.9 plus 8.6