21 Plus 689.9 Addition :

Number 1	Number 2	Answer
21	689.9	710.9

How to calculate 21 plus 689.9 ?

Let's break down the addition of 02100 and 689.9 step by step:

   02100      <-- Start with the rightmost column
+  689.9
---------

    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
+  689.9
---------
     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
+  689.9
---------
     09


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

   02100
+  689.9
---------
     009


    Add the digits in the rightmost column:
        2 + 8 + 1 = 11
        Write down 1 in the rightmost column, carry over 1 to the next column.

   02100
+  689.9
---------
     1009


    Add the digits in the rightmost column:
        0 + 6 + 0 = 7
        Write down 7 in the rightmost column, carry over 0 to the next column.

   02100
+  689.9
---------
     71009

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

The final result is 71009.

Similar Summation Operations :

Number 1	Number 2	ANSWER:	HOW TO ?
21.1	696.9	718	21.1 plus 696.9
21.2	704.9	726.1	21.2 plus 704.9
21.3	713.9	735.2	21.3 plus 713.9
3.3	4	7.3	3.3 plus 4
2.1	1.9	4	2.1 plus 1.9
9.9	1.8	11.7	9.9 plus 1.8