0 + 1 =

____ + 0 = 1

1 + 0

0 + ____ = 1

1 - 0 =

1 - 1 =

0 + 2 =

_____ + 2 = 2

2 + ___ = 2

1 + 1 =

____ + 1 = 2

2 + 0 =

0 + ____ = 2

2 - 2 =

____ - 2 = 0

2 - 1 =

2 - ___ = 1

2 - 0 =

____ - 0 = 2

0 + 3 =

3 + ___ = 3

1 + 2 =

____ + 1 = 3

2 + 1=

1 + ____ = 3

3 + 0 =

3 - 3 =

3 - ____ = 0

3 - 1 =

_____ - 1 = 2

3 - 2 =

3 - ___ = 1

3 - 0 =

____ - 0 = 3

0 + 4 =

4 + ___ =

1 + 3 =

_____ + 1 = 4

2 + 2 =

2 + ____ = 4

3 + 1 =

1 + ___ = 4

4 + 0 =

0 + ____ = 4

4 - 4 =

4 - ___ = 0

4 - 3 =

____ - 3 = 1

4 - 2 =

4 - ____ = 2

4 - 1 =

____ - 1 = 3

4 - 0 =

___ - 0 = 4