4MA1/2H Jan 2022, Question 12: Standard Form
Pearson Edexcel International GCSE Mathematics A 4MA1 · Paper 2H (Higher) · Calculator · 3 marks
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The question, in short
Given a = 6 × 10⁴⁰, calculate a³ and express the result in standard form.
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Solution · 3 marks
- 16³ = 216
- 210⁴⁰ raised to the power 3 is 10^(40 × 3) = 10¹²⁰
- 3216 × 10¹²⁰ = 2.16 × 10² × 10¹²⁰
- 42.16 × 10¹²²
Answer2.16 × 10¹²²
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