84.2 Plus 21 Addition :

Number 1	Number 2	Answer
84.2	21	105.2

How to calculate 84.2 plus 21 ?

Let's break down the addition of 84.2 and 2100 step by step:

   84.2      <-- 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.

   84.2
+  2100
---------
     2


    Add the digits in the rightmost column:
        4 + 1 + 0 = 5
        Write down 5 in the rightmost column, carry over 0 to the next column.

   84.2
+  2100
---------
     5.2


    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.

   84.2
+  2100
---------
     05.2

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

The final result is 105.2.

Similar Summation Operations :

Number 1	Number 2	ANSWER:	HOW TO ?
84.3	30	114.3	84.3 plus 30
84.4	35	119.4	84.4 plus 35
84.5	36	120.5	84.5 plus 36
0.5	4.2	4.7	0.5 plus 4.2
8.6	9.1	17.7	8.6 plus 9.1
3	2.8	5.8	3 plus 2.8