21 Plus 688.9 Addition :

Number 1	Number 2	Answer
21	688.9	709.9

How to calculate 21 plus 688.9 ?

Let's break down the addition of 02100 and 688.9 step by step:

   02100      <-- Start with the rightmost column
+  688.9
---------

    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
+  688.9
---------
     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
+  688.9
---------
     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
+  688.9
---------
     909


    Add the digits in the rightmost column:
        2 + 8 + 1 = 10
        Write down 0 in the rightmost column, carry over 1 to the next column.

   02100
+  688.9
---------
     0909


    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
+  688.9
---------
     70909

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

The final result is 70909.

Similar Summation Operations :

Number 1	Number 2	ANSWER:	HOW TO ?
21.1	694.9	716	21.1 plus 694.9
21.2	695.9	717.1	21.2 plus 695.9
21.3	704.9	726.2	21.3 plus 704.9
4.1	2.9	7	4.1 plus 2.9
4.7	2.5	7.2	4.7 plus 2.5
3.5	7.2	10.7	3.5 plus 7.2