3. Express the following in standard form:

(a) 70,30,000 (b) 750000000000 (c) 8765.43

4. Convert into power notation:

(a) -1/343 (b) -1/81 (c) 512/1331

5. The age of the Earth is 4,600,000,000 years. Write the number in standard form.

3.a.7030000 = 7.03 ×106b. 750000000000 = 7.5×1011c.8765.43 = 8.76543 × 1034a.-1343 = -173b. -181 = -134c. 5121331 = 81135.age of Earth = 4600000000 yrs = 4.6 × 109 yrs

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