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Evaluate the following:(i) 102 × 106(ii) 109 × 107 |
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Answer» (i) 102 × 106 We can express 102 as 100 + 2 and 106 as 100 + 6 = 102 × 106 = (100 + 2) (100 + 6) = 100 (100 + 6) + 2 (100 + 6) = 10000 + 600 + 200 + 12 = 10812 (ii) 109 × 107 We can express 109 as 100 + 9 and 107 as 100 + 7 = 109 × 107 = (100 + 9) (100 + 7) = 100 (100 + 7) + 9 (100 + 7) = 10000 + 700 + 900 + 63 = 11663 |
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