9.9 Plus 420 Addition :

Number 1	Number 2	Answer
9.9	420	429.9

How to calculate 9.9 plus 420 ?

Let's break down the addition of 009.9 and 42000 step by step:

   009.9      <-- Start with the rightmost column
+  42000
---------

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

   009.9
+  42000
---------
     9


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

   009.9
+  42000
---------
     9.9


    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.

   009.9
+  42000
---------
     29.9


    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.

   009.9
+  42000
---------
     429.9

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

The final result is 429.9.

Similar Summation Operations :

Number 1	Number 2	ANSWER:	HOW TO ?
10	429	439	10 plus 429
10.1	435	445.1	10.1 plus 435
10.2	436	446.2	10.2 plus 436
1.5	5.7	7.2	1.5 plus 5.7
1	6.6	7.6	1 plus 6.6
3.3	9.5	12.8	3.3 plus 9.5