The four operations

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Across
  1. 2. minus
  2. 4. a x (b + c) = (a x b)+ (a x c)///(a + b)x c = (a x c) + (b x c)
  3. 5. divided by
  4. 6. The order of adding or multiplying THREE OR MORE numbers does not change the answer
  5. 7. The order of adding or multiplying TWO numbers does not change the answer
Down
  1. 1. times
  2. 3. plus