8.9 Plus 421 Addition :

Number 1	Number 2	Answer
8.9	421	429.9

How to calculate 8.9 plus 421 ?

Let's break down the addition of 008.9 and 42100 step by step:

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

    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.

   008.9
+  42100
---------
     9


    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.

   008.9
+  42100
---------
     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.

   008.9
+  42100
---------
     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.

   008.9
+  42100
---------
     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 ?
9	430	439	9 plus 430
9.1	439	448.1	9.1 plus 439
9.2	448	457.2	9.2 plus 448
7.4	0.2	7.6	7.4 plus 0.2
4.6	9	13.6	4.6 plus 9
2.3	5.8	8.1	2.3 plus 5.8