Subtract till 400

Calculate:

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

365	-	2	=
195	-	19	=
305	-	85	=
227	-	175	=
153	-	58	=
351	-	32	=
325	-	7	=
260	-	87	=
147	-	123	=
78	-	23	=