17.9 Plus 421 Addition :

Number 1	Number 2	Answer
17.9	421	438.9

How to calculate 17.9 plus 421 ?

Let's break down the addition of 017.9 and 42100 step by step:

   017.9      <-- 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.

   017.9
+  42100
---------
     9


    Add the digits in the rightmost column:
        7 + 1 + 0 = 8
        Write down 8 in the rightmost column, carry over 0 to the next column.

   017.9
+  42100
---------
     8.9


    Add the digits in the rightmost column:
        1 + 2 + 0 = 3
        Write down 3 in the rightmost column, carry over 0 to the next column.

   017.9
+  42100
---------
     38.9


    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.

   017.9
+  42100
---------
     438.9

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

The final result is 438.9.

Similar Summation Operations :

Number 1	Number 2	ANSWER:	HOW TO ?
18	427	445	18 plus 427
18.1	429	447.1	18.1 plus 429
18.2	430	448.2	18.2 plus 430
3.6	2.4	6	3.6 plus 2.4
9.6	6.1	15.7	9.6 plus 6.1
1	0.5	1.5	1 plus 0.5