Unit 1 Crossword

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Across
  1. 3. positive and negative whole numbers
  2. 4. natural numbers including zero
  3. 5. real numbers that are not rational numbers
  4. 7. include rational numbers, integers and irrational numbers
Down
  1. 1. numbers expressed in a ratio
  2. 2. way of expressing numbers that are too large or too small and written in decimal form
  3. 6. all numbers used to count naturally