20.9 Plus 669 Addition :

Number 1	Number 2	Answer
20.9	669	689.9

How to calculate 20.9 plus 669 ?

Let's break down the addition of 020.9 and 66900 step by step:

   020.9      <-- Start with the rightmost column
+  66900
---------

    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.

   020.9
+  66900
---------
     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.

   020.9
+  66900
---------
     9.9


    Add the digits in the rightmost column:
        2 + 6 + 0 = 8
        Write down 8 in the rightmost column, carry over 0 to the next column.

   020.9
+  66900
---------
     89.9


    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
+  66900
---------
     689.9

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

The final result is 689.9.

Similar Summation Operations :

Number 1	Number 2	ANSWER:	HOW TO ?
21	678	699	21 plus 678
21.1	683	704.1	21.1 plus 683
21.2	688	709.2	21.2 plus 688
9.6	9	18.6	9.6 plus 9
8.5	7.1	15.6	8.5 plus 7.1
1.7	5.3	7	1.7 plus 5.3