(1)40 × 40 = (2)82 × 90 = (3)92 × 60 =
(4)18 × 80 = (5)30 × 81 = (6)96 × 80 =
(7)50 × 86 = (8)13 × 10 = (9)10 × 20 =
(10)30 × 26 = (11)30 × 62 = (12)88 × 40 =
(13)88 × 30 = (14)60 × 45 = (15)70 × 65 =
(1)40 × 40 = (2)82 × 90 = (3)92 × 60 =
(4)18 × 80 = (5)30 × 81 = (6)96 × 80 =
(7)50 × 86 = (8)13 × 10 = (9)10 × 20 =
(10)30 × 26 = (11)30 × 62 = (12)88 × 40 =
(13)88 × 30 = (14)60 × 45 = (15)70 × 65 =