How do you count by nines?

Answer 1

here is a easier way that i learned in 3rd grade.

so you put the zero up to nine going to down.

0

1

2

3

4

5

6

7

8

9

ok now since we have that we do it the oppisite way starting to bottom to the top

09

18

27

36

45

54

63

72

81

90