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123456
Across
  1. 2. To do this you must add, subtract, multiply and divide
  2. 5. Refers to the number of times a number is multiplied by itself
  3. 6. A symbol that represents a particular root of a number
Down
  1. 1. We use this to shorten and simplify algebraic expressions
  2. 3. Acronym for the words parenthesis, exponents, multiplication, division, addition, subtraction
  3. 4. Is the power to which a number must be raised in order to get some other number