Subtract till 400

Calculate:

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

200	-	87	=
332	-	109	=
290	-	95	=
261	-	72	=
392	-	152	=
197	-	37	=
330	-	69	=
281	-	93	=
254	-	52	=
165	-	64	=