Adding till 400

Calculate:

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

71	+	116	=
66	+	93	=
24	+	28	=
160	+	111	=
132	+	149	=
117	+	84	=
17	+	36	=
2	+	3	=
102	+	97	=
204	+	172	=