Subtract:

2 - 1 =

Subtract:

4 - 1 =

Subtract:

5 - 1 =

Subtract:

3 - 1 =

Subtract:

5 - 4 =

Subtract:

5 - 1 =

Subtract:

3 - 2 =

Subtract:

5 - 4 =

Subtract:

1 - 1 =

Subtract:

5 - 4 =

Subtract:

5 - 3 =

Subtract:

5 - 2 =

Subtract:

3 - 3 =

Subtract:

4 - 3 =

Subtract:

4 - 3 =