Adding till 400

Calculate:

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

126	+	167	=
100	+	116	=
136	+	183	=
78	+	80	=
104	+	85	=
39	+	84	=
182	+	213	=
178	+	89	=
100	+	146	=
92	+	282	=