|
(1)0 -0=□ |
1 -0=□ |
1 -1=□ |
||
|
(2)2 -0=□ |
2 -1=□ |
2 -2=□ |
||
|
(3)3 -0=□ |
3 -1=□ |
3 -2=□ |
||
|
3-3=□ |
||||
|
(4)4 -0=□ |
4 -1=□ |
4 -2=□ |
||
|
4-3=□ |
4 -4=□ |
|||
|
(1)0 -0=□ |
1 -0=□ |
1 -1=□ |
||
|
(2)2 -0=□ |
2 -1=□ |
2 -2=□ |
||
|
(3)3 -0=□ |
3 -1=□ |
3 -2=□ |
||
|
3-3=□ |
||||
|
(4)4 -0=□ |
4 -1=□ |
4 -2=□ |
||
|
4-3=□ |
4 -4=□ |
|||