ABCDEGYF

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Across
  1. 5. the process of combining two or more numbers
  2. 6. A pair of marks
  3. 8. Order of operations summed up
  4. 9. the process of adding
  5. 10. the process of dividing
Down
  1. 1. the process of multiplying
  2. 2. A quality represents the power given to a number
  3. 3. A curvy part to represent to do this part first
  4. 4. taking away from an original amount
  5. 7. combining two amounts