#### Express the following numbers in standard form:

(i) 0.0000000000085

(ii) 0.000000000000942

(iii) 6020000000000000

(iv) 0.00000000837

**Solution:**

#### Express the following numbers in the usual form:

(i) 3.02 × 10^{-6}

(ii) 1-007 × 10^{11}

(iii) 5.375 × 10^{14}

(iv) 7.579 × 10^{-14}

**Solution:**

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