A shipping company in Trinidad calculates that 3.2 × 10⁴ kg of cargo was loaded onto a vessel. An additional 8.5 × 10³ kg was added later. What is the total mass of cargo in standard form?

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Question

A shipping company in Trinidad calculates that 3.2 × 10⁴ kg of cargo was loaded onto a vessel. An additional 8.5 × 10³ kg was added later. What is the total mass of cargo in standard form?

Accepted Answer

4.05 × 10⁴ kg — 05 × 10⁴ kg. Award 1 mark for converting to same power: 3.2 × 10⁴ + 0.85 × 10⁴ = 4.05 × 10⁴. A is incorrect — this is 117,000, not 40,500. C is incorrect — not in proper standard form. D is incorrect — this represents only 4,050.

Answer

4.05 × 10⁴ kg

Answer

11.7 × 10⁴ kg

Answer

4.05 × 10³ kg

Answer

1.17 × 10⁵ kg

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