Happy HEART Day

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Across
  1. 2. a fraction's numerator is greater than the denominator
  2. 5. the answer to a multiplication problem
  3. 8. multiply by itself
  4. 9. a number that multiplies by a variable
Down
  1. 1. taking the difference
  2. 3. a term that is a number
  3. 4. unknown quantity
  4. 6. parts of an expression separated by a + or -
  5. 7. order of operations