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Second Year maths · B.2 · Scientific notation

Convert scientific notation to standard form: small numbers

Move the decimal point to the right for a positive power of 10 and to the left for a negative power.

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  1. Write 6.9 × 10⁻² in standard form.

    Answer: 0.069

  2. Write 4.2 × 10⁴ in standard form.

    Answer: 42000

  3. Write 4.2 × 10⁻⁴ in standard form.

    Answer: 0.00042

Tip: Move the decimal point to the right for a positive power of 10 and to the left for a negative power.

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