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	427	435.5	8.5 plus 427
8.6	434	442.6	8.6 plus 434
8.7	438	446.7	8.7 plus 438
4.8	4.1	8.9	4.8 plus 4.1
1.9	2.2	4.1	1.9 plus 2.2
5	0.6	5.6	5 plus 0.6