21 Plus 668 Addition :

Number 1	Number 2	Answer
21	668	689

How to calculate 21 plus 668 ?

Let's Add Two Numbers Together!

Imagine you have two numbers:

Number 1: 21

Number 2: 668

Now, let's go step by step:

Step 1: Start by looking at the rightmost digit of each number (the ones place).

Add 21's ones place (1) to 668's ones place (8).

Result: 1 + 8 = 9

Finally, the Result:

Sum: 689

Similar Summation Operations :

Number 1	Number 2	ANSWER:	HOW TO ?
21.1	669	690.1	21.1 plus 669
21.2	671	692.2	21.2 plus 671
21.3	672	693.3	21.3 plus 672
6.1	1.6	7.7	6.1 plus 1.6
8.4	3.7	12.1	8.4 plus 3.7
3.2	2	5.2	3.2 plus 2