Subtract till 400

Calculate:

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

157	-	58	=
217	-	194	=
173	-	166	=
82	-	14	=
306	-	144	=
248	-	190	=
318	-	182	=
269	-	192	=
216	-	146	=
82	-	61	=