math crosssword

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Across
  1. 4. is variable and a number
  2. 5. the set of whole number and their opposites
  3. 7. for any nonzero number a reciprocal is 1/a
  4. 9. a set of routine steps to solve problems
  5. 10. common multiple lcm the least multiple shared by two or more numbers
Down
  1. 1. property of multiplication any number multiplied by 1 is itself
  2. 2. an expression with a base and an exponent
  3. 3. the amount at is left over when one number does not divide another number
  4. 6. a letter that stands for an unknown number
  5. 8. of 10 a number then can be written as a product of 10s