Math Crossword

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Across
  1. 6. The longest side of a right triangle
  2. 7. A number multiplied by itself
  3. 8. The result of subtraction
  4. 9. The middle value in a set of ordered numbers
Down
  1. 1. The distance around a circle
  2. 2. A number that is not a fraction or decimal
  3. 3. The value that doesn't change in an expression
  4. 4. A shape with four equal sides and four right angles
  5. 5. The answer to a multiplication problem
  6. 9. The number that appears most often in a set