21.3 Plus 668.4 Addition :

Number 1	Number 2	Answer
21.3	668.4	689.7

How to calculate 21.3 plus 668.4 ?

Let's break down the addition of 021.3 and 668.4 step by step:

   021.3      <-- Start with the rightmost column
+  668.4
---------

    Add the digits in the rightmost column:
        3 + 4 + 0 = 7
        Write down 7 in the rightmost column, carry over 0 to the next column.

   021.3
+  668.4
---------
     7


    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.

   021.3
+  668.4
---------
     9.7


    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.

   021.3
+  668.4
---------
     89.7


    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.

   021.3
+  668.4
---------
     689.7

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

The final result is 689.7.

Similar Summation Operations :

Number 1	Number 2	ANSWER:	HOW TO ?
21.4	672.4	693.8	21.4 plus 672.4
21.5	674.4	695.9	21.5 plus 674.4
21.6	683.4	705	21.6 plus 683.4
7	0.4	7.4	7 plus 0.4
5.2	5.3	10.5	5.2 plus 5.3
9.5	3.3	12.8	9.5 plus 3.3