Subtract till 400

Calculate:

Number of examples:
Numerical difficulty:
Range of values:
Multiplicity:

154	-	114	=
101	-	93	=
327	-	143	=
358	-	84	=
203	-	166	=
272	-	45	=
313	-	97	=
110	-	103	=
164	-	27	=
223	-	139	=