Question
Simplify each of the following:
102 × 103

Answer

102 × 103 = (100 + 2) × 103
= 100 × 103 + 2 × 103
= 100 × (100 + 3) + 2 × (100 + 3)
= 10000 + 300 + 200 + 6
= 10506

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