7.7 Plus 421 Addition :

Number 1	Number 2	Answer
7.7	421	428.7

How to calculate 7.7 plus 421 ?

Let's break down the addition of 007.7 and 42100 step by step:

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

    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.

   007.7
+  42100
---------
     7


    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.

   007.7
+  42100
---------
     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.

   007.7
+  42100
---------
     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.

   007.7
+  42100
---------
     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 ?
7.8	425	432.8	7.8 plus 425
7.9	433	440.9	7.9 plus 433
8	439	447	8 plus 439
6.6	6.1	12.7	6.6 plus 6.1
9.9	0.6	10.5	9.9 plus 0.6
7.5	8.5	16	7.5 plus 8.5