Addition of One

When we add one to any number the total will be next number of the number. 

While adding one to any number Changing the order of numbers, total does not change. 

When we add one to any number and get next number that is called the Successor.

0  +  1  =  1

1  +  1  = 2

1  +  2  = 3

1  +  3  = 4

1  +  4  = 5

1  +  5  = 6

1  +  6  = 7

1  +  7  = 8

1  +  8  = 9

1  +  9 = 10

While adding one to any number Changing the order of numbers, total does not change. 

1  +  0  =  1

1  +  1  = 2

2  +  1  = 3

3  +  1  = 4

4  +  1  = 5

5  +  1  = 6

6  +  1  = 7

7  +  1  = 8

8  +  1  = 9

9  +  1 = 10