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A dot map uses a dot value of 250. A region shows 68 dots. What quantity does it represent?

  • A.17,000
  • B.1,700
  • C.170,000
  • D.27,200

Answer: A

Multiplying 68 dots by the value of 250 gives 17,000. Reading a dot map backwards this way is only approximate, since dots at the edges of dense clusters are difficult to count reliably and some may overlap entirely at that density.

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