Addition/subtraction vocabulary

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Across
  1. 2. synonym for "removing"
  2. 4. number result of subtraction
  3. 6. part of a whole
  4. 7. making or breaking a group of 10 based on place value
Down
  1. 1. a number amount added to another
  2. 3. not as much
  3. 5. synonym for "left"
  4. 6. number result of addition