8.4 Plus 421 Addition :

Number 1	Number 2	Answer
8.4	421	429.4

How to calculate 8.4 plus 421 ?

Let's break down the addition of 008.4 and 42100 step by step:

   008.4      <-- Start with the rightmost column
+  42100
---------

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

   008.4
+  42100
---------
     4


    Add the digits in the rightmost column:
        8 + 1 + 0 = 9
        Write down 9 in the rightmost column, carry over 0 to the next column.

   008.4
+  42100
---------
     9.4


    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.

   008.4
+  42100
---------
     29.4


    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.

   008.4
+  42100
---------
     429.4

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

The final result is 429.4.

Similar Summation Operations :

Number 1	Number 2	ANSWER:	HOW TO ?
8.5	423	431.5	8.5 plus 423
8.6	431	439.6	8.6 plus 431
8.7	437	445.7	8.7 plus 437
3.7	9.2	12.9	3.7 plus 9.2
5.7	3.7	9.4	5.7 plus 3.7
2.9	2.1	5	2.9 plus 2.1