78.7 Plus 42 Addition :

Number 1	Number 2	Answer
78.7	42	120.7

How to calculate 78.7 plus 42 ?

Let's break down the addition of 78.7 and 4200 step by step:

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

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

   78.7
+  4200
---------
     7


    Add the digits in the rightmost column:
        8 + 2 + 1 = 10
        Write down 0 in the rightmost column, carry over 1 to the next column.

   78.7
+  4200
---------
     0.7


    Add the digits in the rightmost column:
        7 + 4 + 1 = 12
        Write down 2 in the rightmost column, carry over 1 to the next column.

   78.7
+  4200
---------
     20.7

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

The final result is 120.7.

Similar Summation Operations :

Number 1	Number 2	ANSWER:	HOW TO ?
78.8	47	125.8	78.8 plus 47
78.9	49	127.9	78.9 plus 49
79	57	136	79 plus 57
9	4.2	13.2	9 plus 4.2
2.8	8.4	11.2	2.8 plus 8.4
4.2	0.8	5	4.2 plus 0.8