15 - 3 X 5=
49 - 7 X 7 =
81 - 9 X 9 =
50 - 10 X 5 =
36 - 6 X 6 =
28 - 4 X 7 =
25 - 5 x 5 =
16 - 4 x 4 =
32 - 8 x 4 =