Square power excercises till 400

Calculate:

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

122	+	62	=
52	+	32	=
12	+	22	=
62	+	122	=
42	+	112	=
62	+	62	=
82	+	102	=
112	+	82	=
72	+	72	=
42	+	82	=