Scientific notation in real-world measurements
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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A virus is about 1.4 × 10⁻³ m wide. Write this number in standard form.
Answer: 0.0014
The distance from Earth to the Sun is about 1.2 × 10⁴ km. Write this number in standard form.
Answer: 12000
The distance from Earth to the Sun is about 4.3 × 10⁶ km. Write this number in standard form.
Answer: 4300000
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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