8.5 Plus 420.4 Addition :

Number 1	Number 2	Answer
8.5	420.4	428.9

How to calculate 8.5 plus 420.4 ?

Let's break down the addition of 008.5 and 420.4 step by step:

   008.5      <-- Start with the rightmost column
+  420.4
---------

    Add the digits in the rightmost column:
        5 + 4 + 0 = 9
        Write down 9 in the rightmost column, carry over 0 to the next column.

   008.5
+  420.4
---------
     9


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

   008.5
+  420.4
---------
     8.9


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

   008.5
+  420.4
---------
     28.9


    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.

   008.5
+  420.4
---------
     428.9

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

The final result is 428.9.

Similar Summation Operations :

Number 1	Number 2	ANSWER:	HOW TO ?
8.6	425.4	434	8.6 plus 425.4
8.7	426.4	435.1	8.7 plus 426.4
8.8	433.4	442.2	8.8 plus 433.4
3	7.9	10.9	3 plus 7.9
5.8	2.5	8.3	5.8 plus 2.5
2.8	4	6.8	2.8 plus 4