10.2 Plus 21 Addition :

Number 1	Number 2	Answer
10.2	21	31.2

How to calculate 10.2 plus 21 ?

Let's break down the addition of 10.2 and 2100 step by step:

   10.2      <-- Start with the rightmost column
+  2100
---------

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

   10.2
+  2100
---------
     2


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

   10.2
+  2100
---------
     1.2


    Add the digits in the rightmost column:
        1 + 2 + 0 = 3
        Write down 3 in the rightmost column, carry over 0 to the next column.

   10.2
+  2100
---------
     31.2

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

The final result is 31.2.

Similar Summation Operations :

Number 1	Number 2	ANSWER:	HOW TO ?
10.3	30	40.3	10.3 plus 30
10.4	37	47.4	10.4 plus 37
10.5	46	56.5	10.5 plus 46
8.5	5.3	13.8	8.5 plus 5.3
2.5	6.7	9.2	2.5 plus 6.7
9.6	1.5	11.1	9.6 plus 1.5