(i) 103 × 107 = (100 + 3) × (100 + 7)
= (100)2 + (3 + 7) × 100 + 3 × 7
=10000 + 1000 + 21 = 11021
(ii) 95 × 96 = (100 – 5) × (100 – 4)
= (100)2 (5 + 4) × 100 + 5 × 4
= 10000 – 900 + 20 = 9120
(iii) 104 × 96 = (100 + 4) × (100 – 4)
= (100)2 – (4)2
= 10000 – 16 = 9984