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Grade 8 maths · B.7 · Scientific notation

Multiply decimals in scientific notation

Multiply or divide the numbers in front, then combine the powers of 10. Make sure the front number is between 1 and 10.

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  1. Multiply: (6 × 10⁻²) × (6.1 × 10¹). Write the answer in scientific notation, like 4.7 × 10^3.

    Answer: 3.66 × 10^0

  2. Multiply: (7 × 10⁻⁴) × (1.7 × 10⁴). Write the answer in scientific notation, like 4.7 × 10^3.

    Answer: 1.19 × 10^1

  3. Multiply: (2.5 × 10⁰) × (6.5 × 10⁻¹). Write the answer in scientific notation, like 4.7 × 10^3.

    Answer: 1.625 × 10^0

Tip: Multiply or divide the numbers in front, then combine the powers of 10. Make sure the front number is between 1 and 10.

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