5th Grade Math Crossword

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Across
  1. 3. a symbol representing a missing number in a algebraic equation
  2. 6. cubic root of 729
  3. 7. the number before a variable
  4. 9. what is the mean of the set of numbers: 68, 52, 47, 86, 39
Down
  1. 1. .6 x .7
  2. 2. of the following is a prime number? 8, 54, 83,
  3. 4. repeat addition
  4. 5. repeat multiplication
  5. 8. another way of saying order of operations