8.7 Plus 421 Addition :

Number 1	Number 2	Answer
8.7	421	429.7

How to calculate 8.7 plus 421 ?

Let's break down the addition of 008.7 and 42100 step by step:

   008.7      <-- 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.

   008.7
+  42100
---------
     7


    Add the digits in the rightmost column:
        8 + 1 + 0 = 9
        Write down 9 in the rightmost column, carry over 0 to the next column.

   008.7
+  42100
---------
     9.7


    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
+  42100
---------
     29.7


    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
+  42100
---------
     429.7

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

The final result is 429.7.

Similar Summation Operations :

Number 1	Number 2	ANSWER:	HOW TO ?
8.8	430	438.8	8.8 plus 430
8.9	431	439.9	8.9 plus 431
9	440	449	9 plus 440
2.5	2.8	5.3	2.5 plus 2.8
9	4.6	13.6	9 plus 4.6
3.2	7.2	10.4	3.2 plus 7.2