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FCAT Grade 8 Science Assessment Practice Questions

Category - FCAT Science Assessment Grade 8

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Which of the following is not a rule when calculating the significant figures in a number?
  1. All zeroes are always significant.
  2. All non-zero numbers are significant.
  3. Zeroes written to the left of a decimal point are significant.
  4. Zeroes located between non zero numbers are significant.
  5. Zeroes at the end of a number are significant.
Explanation
Answer: A - Zeroes are not always significant. For example, in the number 10,000 has 2 significant figures: the one and the last zero on the right. If the number were written as 10,000.0 then it would have 6 significant figures, due to the decimal point.
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