Subtract till 400

Calculate:

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

259	-	4	=
223	-	84	=
182	-	11	=
104	-	17	=
192	-	27	=
267	-	144	=
332	-	47	=
386	-	165	=
87	-	76	=
234	-	197	=