7
-
3
=
____________________
4
-
2
=
____________________
3
-
1
=
____________________
10
-
9
=
____________________
8
-
3
=
____________________
3
-
3
=
____________________
5
-
1
=
____________________
6
-
3
=
____________________
7
-
2
=
____________________
9
-
9
=
____________________
5
-
4
=
1
