Square power excercises till 400

Calculate:

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

62	+	72	=
22	+	32	=
62	+	142	=
32	+	42	=
112	+	42	=
12	+	42	=
52	+	32	=
62	+	42	=
42	+	12	=
112	+	92	=