20.9 Plus 669.4 Addition :

Number 1	Number 2	Answer
20.9	669.4	690.3

How to calculate 20.9 plus 669.4 ?

Let's break down the addition of 020.9 and 669.4 step by step:

   020.9      <-- Start with the rightmost column
+  669.4
---------

    Add the digits in the rightmost column:
        9 + 4 + 1 = 13
        Write down 3 in the rightmost column, carry over 1 to the next column.

   020.9
+  669.4
---------
     3


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

   020.9
+  669.4
---------
     0.3


    Add the digits in the rightmost column:
        2 + 6 + 0 = 9
        Write down 9 in the rightmost column, carry over 0 to the next column.

   020.9
+  669.4
---------
     90.3


    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.

   020.9
+  669.4
---------
     690.3

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

The final result is 690.3.

Similar Summation Operations :

Number 1	Number 2	ANSWER:	HOW TO ?
21	676.4	697.4	21 plus 676.4
21.1	683.4	704.5	21.1 plus 683.4
21.2	688.4	709.6	21.2 plus 688.4
7.8	3.7	11.5	7.8 plus 3.7
9.3	9.6	18.9	9.3 plus 9.6
1.7	4.3	6	1.7 plus 4.3