Chapter 4

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123456
Across
  1. 3. the proper sequence of calculations
  2. 5. -99 for example
  3. 6. numbers on both sides of the zero
Down
  1. 1. the opposite of 888
  2. 2. these include xxx and xvxv but not fractions
  3. 4. numbers decrease in value as they move to the left on this line