8.7 Plus 420 Addition :

Number 1	Number 2	Answer
8.7	420	428.7

How to calculate 8.7 plus 420 ?

Let's break down the addition of 008.7 and 42000 step by step:

   008.7      <-- Start with the rightmost column
+  42000
---------

    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.

   008.7
+  42000
---------
     7


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

   008.7
+  42000
---------
     8.7


    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.

   008.7
+  42000
---------
     28.7


    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.

   008.7
+  42000
---------
     428.7

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

The final result is 428.7.

Similar Summation Operations :

Number 1	Number 2	ANSWER:	HOW TO ?
8.8	422	430.8	8.8 plus 422
8.9	430	438.9	8.9 plus 430
9	432	441	9 plus 432
9.2	8.8	18	9.2 plus 8.8
2.7	1	3.7	2.7 plus 1
3.1	0.5	3.6	3.1 plus 0.5