The following graphic shows the 1 times table modulo 2.

Mutiples of 1 are, for instance :

- 1 x 1 = 1
- 2 x 1 = 2
- 3 x 1 = 3
- 4 x 1 = 4

Also, modulo 2, noted "mod 2" means we remove as many Multiples of 2 as possible from the result.

For example :

- 1 mod 2 = 1 - 0 x 2 = 1
- 2 mod 2 = 2 - 1 x 2 = 0
- 3 mod 2 = 3 - 1 x 2 = 1
- 4 mod 2 = 4 - 2 x 2 = 0

Once we have the 1 multiplication table modulo 2, we link with a line in a circle the operand with the result.