21 Plus 688.4 Addition :

Number 1	Number 2	Answer
21	688.4	709.4

How to calculate 21 plus 688.4 ?

Let's break down the addition of 02100 and 688.4 step by step:

   02100      <-- Start with the rightmost column
+  688.4
---------

    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
+  688.4
---------
     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
+  688.4
---------
     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
+  688.4
---------
     904


    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
+  688.4
---------
     0904


    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
+  688.4
---------
     70904

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

The final result is 70904.

Similar Summation Operations :

Number 1	Number 2	ANSWER:	HOW TO ?
21.1	697.4	718.5	21.1 plus 697.4
21.2	702.4	723.6	21.2 plus 702.4
21.3	704.4	725.7	21.3 plus 704.4
0.9	9.9	10.8	0.9 plus 9.9
4.8	4.9	9.7	4.8 plus 4.9
6.8	8.8	15.6	6.8 plus 8.8