WASSCE Core Mathematics Practice Questions - WASSCE Core Mathematics General Mathematics (WAEC) Exam

Express 0.000405 in standard form (scientific notation).

4.05 × 10⁻⁴ 4.05 × 10⁻³ 40.5 × 10⁻⁵ 4.05 × 10⁴

Correct Answer:

4.05 × 10⁻⁴

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