Please answer the subtration problems below. Click SUBMIT when finished.
4	-	3	=			5	-	0	=
3	-	0	=			6	-	4	=
2	-	2	=			12	-	8	=
8	-	2	=			11	-	2	=
10	-	1	=			12	-	11	=
5	-	2	=			2	-	0	=
5	-	4	=			10	-	2	=
10	-	8	=			12	-	9	=
12	-	3	=			9	-	9	=
11	-	1	=			12	-	7	=