Subtract till 400

Calculate:

The number of examples:
Numerical difficulty:
Range of values:
Multiplicity:

341	-	182	=
296	-	18	=
223	-	185	=
226	-	31	=
59	-	44	=
368	-	88	=
258	-	129	=
101	-	22	=
125	-	95	=
167	-	26	=