A measurement is a description that includes a number and a unit., A negative exponent is used in scientific notation for decimals numbers., A gram measures mass with a balance scale., A liter measures liquid volume., Scientific notation is a short way of representing very large or tiny numbers., Accuracy is how close you are to the exact expected value or bullseye., Precision is the repeatability of a measurement or how many times you land on the same value., Just because you may be precise does NOT mean you are accurate.

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