3.9 Plus 42 Addition :

Number 1	Number 2	Answer
3.9	42	45.9

How to calculate 3.9 plus 42 ?

Let's break down the addition of 03.9 and 4200 step by step:

   03.9      <-- Start with the rightmost column
+  4200
---------

    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.

   03.9
+  4200
---------
     9


    Add the digits in the rightmost column:
        3 + 2 + 0 = 5
        Write down 5 in the rightmost column, carry over 0 to the next column.

   03.9
+  4200
---------
     5.9


    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.

   03.9
+  4200
---------
     45.9

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

The final result is 45.9.

Similar Summation Operations :

Number 1	Number 2	ANSWER:	HOW TO ?
4	48	52	4 plus 48
4.1	56	60.1	4.1 plus 56
4.2	60	64.2	4.2 plus 60
8	8.7	16.7	8 plus 8.7
8	6.8	14.8	8 plus 6.8
1.9	3.2	5.1	1.9 plus 3.2