WME@Kimpton Middle
Scientific NotationIn astronomy, distances are huge and usually measured in light
years. One light year is the distance light travels in a year.
The diagram on the right shows one light year to be approximately The notation 10^{12} means multiplying 12 tens together. Here, the number 10 is the base and the number 12 is the exponent. And the number is the 10 to the power 12. The exponent tells you how many bases to multiply together.
A power of 10:
10^{3} = 10 ×10 ×10 = 1000
Converting to Scientific NotationA number is in scientific notation if it is written as the product of a number whose absolute value is between 0 and 10 multiplied by a power of 10. For example, 213 = 2.13 × 10^{2} (2.13E2) and 0.0003 = 3 × 10^{4} (3E4). Here is the rules to remember:
Write these numbers in scientific notation.

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