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Question

(i) Express 2000000 in standard form.
(ii) Express 6.4 × 105 in usual form.

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Solution


(i) 2000000 = 2.000000 × 106 [since the decimal point is moved 6 places to the left]
= 2 × 106

(ii) 6.4 × 105 = 6.4 × 100000
= 640000

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