NAEP Mathematics Grade 8

Category - Mathematics

The diameter of a red blood cell, in inches, is 3 × 10 -4. This expression is the same as which of the following numbers?
  1. 0.00003
  2. 0.0003
  3. 0.003
  4. 3,000
  5. 30,000
Explanation
Answer: B - 0.0003
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