Square power excercises till 100

Calculate:

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

62	+	42	=
22	+	52	=
22	+	22	=
42	+	12	=
42	+	62	=
32	+	22	=
52	+	52	=
12	+	22	=
42	+	42	=
22	+	42	=