• Scientific notation is a way to express numbers as the product of two numbers: a coefficient and the number 10 raised to a power.
  • It is a very useful tool for working with numbers that are either very large or very small.
  • In scientific notation, the distance from Earth to the Sun is 1.5 × 1011 m. The power of 10, or exponent, is 11 because you would have to multiply 1.
  • 5 by 1011 to get the correct number.
  • Scientific notation is sometimes referred to as exponential notation.
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